diff --git a/config/config-example.js b/config/config-example.js
index 532ade8cd..f717d2706 100644
--- a/config/config-example.js
+++ b/config/config-example.js
@@ -1,13 +1,14 @@
 /**
- * @typedef {'mysql' | 'postgres' | 'mock'} DatabaseDriver
- * @typedef {{driver?: DatabaseDriver, prefix?: string}} DatabaseConfig
- * @typedef {import('mysql2').PoolOptions & DatabaseConfig} MySQLDatabaseConfig
- * @typedef {import('pg').PoolConfig & DatabaseConfig} PGDatabaseConfig
+ * @typedef {'mysql' | 'postgres' | 'sqlite' | 'mock'} DatabaseDriver
+ * @typedef {{driver?: DatabaseDriver, prefix?: string, path?: string}} BasicDatabaseConfig
+ * @typedef {import('mysql2').PoolOptions & BasicDatabaseConfig} MySQLDatabaseConfig
+ * @typedef {import('pg').PoolConfig & BasicDatabaseConfig} PGDatabaseConfig
+ * @typedef {MySQLDatabaseConfig | PGDatabaseConfig} DatabaseConfig
  */
 
 /**
  * For logins and ladders
- * @type {MySQLDatabaseConfig}
+ * @type {DatabaseConfig}
  */
 exports.mysql = {
 	driver: "mysql",
@@ -22,7 +23,7 @@ exports.mysql = {
 
 /**
  * For replays
- * @type {PGDatabaseConfig | undefined}
+ * @type {DatabaseConfig | null | undefined}
  */
 exports.replaysdb = {
 	driver: "postgres",
@@ -35,13 +36,13 @@ exports.replaysdb = {
 
 /**
  * For ladders
- * @type {MySQLDatabaseConfig | undefined}
+ * @type {DatabaseConfig | null | undefined}
  */
-exports.ladderdb = undefined;
+exports.ladderdb = null;
 
 /**
  * For friends
- * @type {PGDatabaseConfig | null}
+ * @type {DatabaseConfig | null | undefined}
  */
 exports.postgres = null;
 
diff --git a/src/config-loader.ts b/src/config-loader.ts
index c8036e32d..a6dc73eea 100644
--- a/src/config-loader.ts
+++ b/src/config-loader.ts
@@ -14,13 +14,16 @@ export type Configuration = typeof defaults;
 
 export function load(invalidate = false): Configuration {
 	if (process.env.NODE_TEST_CONTEXT) {
+		const databasePath = path.resolve(__dirname, '../../src/test/fixtures/database.sql');
 		return {
 			...defaults,
 			watchconfig: false,
 			loadprivaterelayips: false,
 			serverlist: path.resolve(__dirname, '../../src/test/fixtures/servers.php'),
-			mysql: { driver: 'mock' },
-			postgres: { driver: 'mock' },
+			mysql: { driver: 'mock', path: databasePath },
+			postgres: { driver: 'mock', path: databasePath },
+			replaysdb: { driver: 'mock', path: databasePath },
+			ladderdb: { driver: 'mock', path: databasePath },
 		};
 	}
 
diff --git a/src/database-mock.ts b/src/database-mock.ts
deleted file mode 100644
index 784d80e87..000000000
--- a/src/database-mock.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * Mock database driver.
- */
-import { type DatabaseTable } from './database';
-
-type MockTableBase<Row> = Pick<DatabaseTable<Row, any>, 'name' | 'primaryKeyName' | 'db'>;
-
-function createMockTable<Row>(
-	name: string, primaryKeyName: keyof Row & string | null = null
-): DatabaseTable<Row, any> {
-	const table: MockTableBase<Row> = {
-		name,
-		primaryKeyName,
-		db: { type: 'mock' } as any,
-	};
-	return new Proxy(table, {
-		get(target, prop, receiver) {
-			if (prop in target) return Reflect.get(target, prop, receiver);
-			if (typeof prop === 'string') {
-				return () => {
-					throw new Error(`Mock table "${name}" attempted to use "${prop}".`);
-				};
-			}
-		},
-	}) as DatabaseTable<Row, any>;
-}
-
-export class MockDatabase {
-	type = 'mock';
-	prefix = '';
-	readonly name: string;
-	constructor(_config: any, name: string) {
-		this.name = name;
-	}
-	getTable<Row>(tableName: string, primaryKeyName: keyof Row & string | null = null) {
-		return createMockTable<Row>(`${this.name}.${tableName}`, primaryKeyName);
-	}
-	close() {}
-}
diff --git a/src/database.ts b/src/database.ts
index 4a82f6d63..5348efb94 100644
--- a/src/database.ts
+++ b/src/database.ts
@@ -6,6 +6,8 @@
  * @author Zarel
  */
 
+import * as fs from 'fs';
+import { DatabaseSync } from 'node:sqlite';
 import * as mysql from 'mysql2';
 import * as pg from 'pg';
 
@@ -114,14 +116,14 @@ export function SQL(strings: TemplateStringsArray, ...values: SQLValue[]) {
 
 export interface ResultRow { [k: string]: BasicSQLValue }
 
-export const connectedDatabases: Database[] = [];
+export const connectedDatabases: Database<any, any>[] = [];
 
 export async function closeDatabases() {
 	const databases = connectedDatabases.splice(0);
 	await Promise.all(databases.map(database => database.close()));
 }
 
-export abstract class Database<Pool extends mysql.Pool | pg.Pool = mysql.Pool | pg.Pool, OkPacket = unknown> {
+export abstract class Database<Pool = mysql.Pool | pg.Pool, OkPacket = unknown> {
 	connection: Pool;
 	prefix: string;
 	type = '';
@@ -170,7 +172,7 @@ type PartialOrSQL<T> = {
 type OkPacketOf<DB extends Database> = DB extends Database<any, infer T> ? T : never;
 
 // Row extends SQLRow but TS doesn't support closed types so we can't express this
-export class DatabaseTable<Row, DB extends Database> {
+export class DatabaseTable<Row, DB extends Database<any, any>> {
 	db: DB;
 	name: string;
 	primaryKeyName: keyof Row & string | null;
@@ -228,6 +230,13 @@ export class DatabaseTable<Row, DB extends Database> {
 	}
 	updateOne(partialRow: PartialOrSQL<Row>):
 	(strings: TemplateStringsArray, ...rest: SQLValue[]) => Promise<OkPacketOf<DB>> {
+		if (this.db.type === 'sqlite') {
+			// sqlite usually doesn't support UPDATE ... LIMIT 1
+			return (strings, ...rest) => this.queryExec()`UPDATE "${this.name}" SET ${partialRow as any}
+				WHERE rowid = (
+					SELECT rowid FROM "${this.name}" ${new SQLStatement(strings, rest)} LIMIT 1
+				)`;
+		}
 		return (s, ...r) =>
 			this.queryExec()`UPDATE "${this.name}" SET ${partialRow as any} ${new SQLStatement(s, r)} LIMIT 1`;
 	}
@@ -238,6 +247,13 @@ export class DatabaseTable<Row, DB extends Database> {
 	}
 	deleteOne():
 	(strings: TemplateStringsArray, ...rest: SQLValue[]) => Promise<OkPacketOf<DB>> {
+		if (this.db.type === 'sqlite') {
+			// sqlite usually doesn't support DELETE ... LIMIT 1
+			return (strings, ...rest) => this.queryExec()`DELETE FROM "${this.name}"
+				WHERE rowid = (
+					SELECT rowid FROM "${this.name}" ${new SQLStatement(strings, rest)} LIMIT 1
+				)`;
+		}
 		return (strings, ...rest) =>
 			this.queryExec()`DELETE FROM "${this.name}" ${new SQLStatement(strings, rest)} LIMIT 1`;
 	}
@@ -255,6 +271,10 @@ export class DatabaseTable<Row, DB extends Database> {
 		return this.queryExec()`INSERT INTO "${this.name}" (${partialRow as SQLValue}) ${where}`;
 	}
 	insertIgnore(partialRow: PartialOrSQL<Row>, where?: SQLStatement) {
+		if (this.db.type === 'sqlite') {
+			// sqlite usually doesn't support DELETE ... LIMIT 1
+			return this.queryExec()`INSERT OR IGNORE INTO "${this.name}" (${partialRow as SQLValue}) ${where}`;
+		}
 		return this.queryExec()`INSERT IGNORE INTO "${this.name}" (${partialRow as SQLValue}) ${where}`;
 	}
 	async tryInsert(partialRow: PartialOrSQL<Row>, where?: SQLStatement) {
@@ -264,10 +284,20 @@ export class DatabaseTable<Row, DB extends Database> {
 			if (err.code === 'ER_DUP_ENTRY') {
 				return undefined;
 			}
+			if (
+				this.db.type === 'sqlite' &&
+				[1555, 2067].includes(err.errcode)
+			) return undefined;
 			throw err;
 		}
 	}
 	upsert(partialRow: PartialOrSQL<Row>, partialUpdate = partialRow, where?: SQLStatement) {
+		if (this.db.type === 'sqlite') {
+			if (!this.primaryKeyName) throw new Error(`Cannot upsert() without a single-column primary key`);
+			return this.queryExec(
+			)`INSERT INTO "${this.name}" (${partialRow as any}) ON CONFLICT ("${this.primaryKeyName
+			}") DO UPDATE SET ${partialUpdate as any} ${where}`;
+		}
 		if (this.db.type === 'pg') {
 			return this.queryExec(
 			)`INSERT INTO "${this.name}" (${partialRow as any}) ON CONFLICT (${this.primaryKeyName
@@ -290,6 +320,9 @@ export class DatabaseTable<Row, DB extends Database> {
 	}
 	delete(primaryKey: BasicSQLValue) {
 		if (!this.primaryKeyName) throw new Error(`Cannot delete() without a single-column primary key`);
+		if (this.db.type === 'sqlite') {
+			return this.deleteAll()`WHERE "${this.primaryKeyName}" = ${primaryKey}`;
+		}
 		return this.deleteAll()`WHERE "${this.primaryKeyName}" = ${primaryKey} LIMIT 1`;
 	}
 	update(primaryKey: BasicSQLValue, data: PartialOrSQL<Row>) {
@@ -391,3 +424,71 @@ export class PGDatabase extends Database<pg.Pool, { affectedRows: number | null
 		return this.connection.end();
 	}
 }
+
+export interface SQLiteDatabaseConfig {
+	path?: string;
+	prefix?: string;
+}
+
+export interface SQLiteResult {
+	affectedRows: number;
+	insertId: number;
+}
+
+export class SQLiteDatabase extends Database<DatabaseSync, SQLiteResult> {
+	override type = 'sqlite';
+
+	constructor(config: SQLiteDatabaseConfig = {}) {
+		super(new DatabaseSync(config.path || ':memory:'), config.prefix || '');
+	}
+
+	override _resolveSQL(query: SQLStatement): [query: string, values: BasicSQLValue[]] {
+		let sql = query.sql[0];
+		const values = [];
+		for (let i = 0; i < query.values.length; i++) {
+			const value = query.values[i];
+			if (query.sql[i + 1].startsWith('`') || query.sql[i + 1].startsWith('"')) {
+				sql = sql.slice(0, -1) + this.escapeId(`${value as any}`) + query.sql[i + 1].slice(1);
+			} else {
+				sql += '?' + query.sql[i + 1];
+				values.push(value);
+			}
+		}
+		return [sql, values];
+	}
+
+	override _query(query: string, values: BasicSQLValue[]) {
+		return Promise.resolve().then(() => {
+			const rows = this.connection.prepare(query).all(...values);
+			return rows.map(row => ({ ...(row as Record<string, unknown>) }));
+		});
+	}
+
+	override _queryExec(query: string, values: BasicSQLValue[]) {
+		return Promise.resolve().then(() => {
+			const result = this.connection.prepare(query).run(...values);
+			return {
+				affectedRows: Number(result.changes),
+				insertId: Number(result.lastInsertRowid),
+			};
+		});
+	}
+
+	override escapeId(id: string) {
+		return `"${id.replace(/"/g, '""')}"`;
+	}
+
+	override close() {
+		return Promise.resolve().then(() => this.connection.close());
+	}
+}
+
+export class MockDatabase extends SQLiteDatabase {
+	readonly name: string;
+
+	constructor(config: SQLiteDatabaseConfig | null | undefined, name: string) {
+		super({ path: ':memory:', prefix: config?.prefix });
+		this.name = name;
+		if (config?.path) this.connection.exec(fs.readFileSync(config.path, 'utf8'));
+	}
+}
diff --git a/src/server.ts b/src/server.ts
index ba57be444..ae25e398b 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -8,6 +8,7 @@ import * as https from 'https';
 import * as child from 'child_process';
 import * as dns from 'dns';
 import * as fs from 'fs';
+import * as net from 'net';
 import { toID, md5 } from './utils';
 import { Config } from './config-loader';
 import { actions } from './actions';
@@ -331,14 +332,14 @@ export class Server {
 	awaitingEnd?: () => void;
 	closing?: Promise<void>;
 	activeRequests = 0;
-	constructor(port = (Config.port || 8000), host = (Config.bindaddress || "0.0.0.0")) {
+	constructor(port: number | null = (Config.port || 8000), host = (Config.bindaddress || "0.0.0.0")) {
 		this.host = host;
-		this.port = port;
+		this.port = port || 0;
 
 		this.server = http.createServer((req, res) => void this.handle(req, res));
-		this.server.listen(port, host);
+		if (port !== null) this.server.listen(port, host);
 		this.httpsServer = null;
-		if (Config.ssl) {
+		if (Config.ssl && port !== null) {
 			this.httpsServer = https.createServer(Config.ssl, (req, res) => void this.handle(req, res));
 			this.httpsServer.listen(Config.ssl.port || 8043);
 		}
@@ -402,11 +403,45 @@ export class Server {
 		this.activeRequests--;
 		if (!this.activeRequests) this.awaitingEnd?.();
 	}
+	async request(url: string, bodyData?: Partial<ActionRequest>) {
+		const socket = new net.Socket();
+		const req = new http.IncomingMessage(socket);
+		req.url = url;
+		req.method = bodyData ? 'POST' : 'GET';
+		if (bodyData) {
+			req.push(new URLSearchParams(bodyData as Record<string, string>).toString());
+		}
+		req.push(null);
+
+		const res = new http.ServerResponse(req);
+		let body = '';
+		const result = new Promise<{
+			statusCode: number,
+			body: string,
+		}>(resolve => {
+			const originalWrite = res.write.bind(res);
+			const originalEnd = res.end.bind(res);
+			res.write = ((chunk: any, ...args: any[]) => {
+				if (chunk) body += chunk;
+				return originalWrite(chunk, ...args);
+			}) as typeof res.write;
+			res.end = ((chunk: any, ...args: any[]) => {
+				if (chunk) body += chunk;
+				originalEnd(chunk, ...args);
+				resolve({ statusCode: res.statusCode, body });
+				return res;
+			}) as typeof res.end;
+		});
+
+		await this.handle(req, res);
+		return result;
+	}
 	ensureHeaders(res: http.ServerResponse) {
 		if (this.awaitingEnd) res.setHeader('Connection', 'close');
 	}
 	close() {
 		if (this.closing) return this.closing;
+		if (!this.server.listening && !this.activeRequests) return Promise.resolve();
 		this.server.close();
 		if (!this.activeRequests) return Promise.resolve();
 		this.closing = new Promise<void>(resolve => {
diff --git a/src/tables.ts b/src/tables.ts
index 8f10ad121..425659f63 100644
--- a/src/tables.ts
+++ b/src/tables.ts
@@ -1,15 +1,14 @@
 /**
  * Login server database tables
  */
-import { MySQLDatabase, PGDatabase } from './database';
-import { MockDatabase } from './database-mock';
+import { MockDatabase, MySQLDatabase, PGDatabase, SQLiteDatabase } from './database';
 import { Config } from './config-loader';
 
 import type { LadderEntry } from './ladder';
 import type { ReplayRow } from './replays';
 import type { Suspect } from './actions';
 
-type DatabaseDriver = 'mysql' | 'postgres' | 'mock';
+type DatabaseDriver = 'mysql' | 'postgres' | 'sqlite' | 'mock';
 type DatabaseConfig = {
 	driver?: DatabaseDriver,
 	prefix?: string,
@@ -28,6 +27,7 @@ function createDatabase<DB extends RealDatabase>(
 	const driver = config?.driver || defaultDriver;
 	if (driver === 'mock') return new MockDatabase(config, name) as unknown as DB;
 	if (!config) throw new Error(`Database config "${name}" is required for ${driver}.`);
+	if (driver === 'sqlite') return new SQLiteDatabase(stripDriver(config)) as unknown as DB;
 	if (driver === 'mysql') return new MySQLDatabase(stripDriver(config) as any) as DB;
 	if (driver === 'postgres') return new PGDatabase(stripDriver(config) as any) as DB;
 	throw new Error(`Unsupported database driver for ${name}.`);
diff --git a/src/test/fixtures/database.sql b/src/test/fixtures/database.sql
new file mode 100644
index 000000000..1cc3483a7
--- /dev/null
+++ b/src/test/fixtures/database.sql
@@ -0,0 +1,52 @@
+CREATE TABLE replays (
+	id TEXT PRIMARY KEY,
+	format TEXT NOT NULL,
+	players TEXT NOT NULL,
+	log TEXT NOT NULL,
+	inputlog TEXT,
+	uploadtime INTEGER NOT NULL,
+	views INTEGER NOT NULL DEFAULT 0,
+	formatid TEXT NOT NULL,
+	rating INTEGER,
+	private INTEGER NOT NULL DEFAULT 0,
+	password TEXT
+);
+
+INSERT INTO replays (
+	id, format, players, log, inputlog, uploadtime, views, formatid, rating, private, password
+) VALUES (
+	'oumonotype-82345404', 'OU Monotype', 'kdarewolf,Onox',
+	'|join|kdarewolf
+|join|Onox
+|player|p1|kdarewolf|37
+|player|p2|Onox|159
+|gametype|singles
+|gen|6
+|tier|OU Monotype
+|clearpoke
+|poke|p1|Kecleon, F, shiny
+|poke|p1|Diggersby, M
+|poke|p1|Girafarig, M, shiny
+|poke|p1|Heliolisk, F
+|poke|p1|Chansey, F, shiny
+|poke|p1|Staraptor, F, shiny
+|poke|p2|Espeon, M, shiny
+|poke|p2|Metagross, shiny
+|poke|p2|Reuniclus, M, shiny
+|poke|p2|Alakazam, M, shiny
+|poke|p2|Delphox, M, shiny
+|poke|p2|Gardevoir, M, shiny
+|teampreview
+|callback|decision
+|
+|start
+|switch|p1a: May Day Parade|Kecleon, F, shiny|324/324
+|switch|p2a: AMagicalFox|Delphox, M, shiny|292/292
+|turn|1
+|callback|decision
+|
+|move|p1a: May Day Parade|Fake Out|p2a: AMagicalFox
+|-damage|p2a: AMagicalFox|213/292
+|cant|p2a: AMagicalFox|flinch',
+	NULL, 1390960565, 5468, '', NULL, 0, NULL
+);
diff --git a/src/test/server.test.ts b/src/test/server.test.ts
index 09a624c73..c7f03a619 100644
--- a/src/test/server.test.ts
+++ b/src/test/server.test.ts
@@ -1,7 +1,9 @@
 import { strict as assert } from 'assert';
 import * as http from 'http';
 import test from 'node:test';
+import { Replays } from '../replays';
 import { Server } from '../server';
+import { replays } from '../tables';
 
 async function waitForListening(server: Server) {
 	await new Promise<void>((resolve, reject) => {
@@ -68,3 +70,23 @@ void test('/api/test reports unknown request type', async () => {
 		await closeServer(server);
 	}
 });
+
+void test('/api/replays/get.json uses the mock database', async () => {
+	const server = new Server(null);
+	try {
+		assert.equal(replays.db.type, 'sqlite');
+		const firstResponse = await server.request('/api/replays/get.json', { id: 'oumonotype-82345404' });
+		assert.equal(firstResponse.statusCode, 200);
+		assert.equal(JSON.parse(firstResponse.body).views, 5468);
+
+		const replay = await Replays.get('oumonotype-82345404');
+		assert(replay);
+		assert.equal(replay.views, 5468);
+
+		const secondResponse = await server.request('/api/replays/get.json', { id: 'oumonotype-82345404' });
+		assert.equal(secondResponse.statusCode, 200);
+		assert.equal(JSON.parse(secondResponse.body).views, 5469);
+	} finally {
+		await server.close();
+	}
+});