#games

11 games interview questions, asked at Amazon, Google, OpenAI and 5 more companies. Last asked Oct 2026.

Design a real-time trivia battle royale with live spectatorsSystem designDesign a trivia battle royale. A room holds dozens to a hundred or more players. Questions go out round by round; after each round, players who answered wrong and the slowest…
Last asked Oct 2026
Design a real-time multiplayer typing raceSystem designDesign an online typing race. Each race has 2 to 8 players. When the race starts, every player gets the same generated passage and types it; the first to finish the whole passage…
Last asked Oct 2026
2048 game with move, merge and game-over detectionCodingImplement the 2048 game loop: board moves with tile merging, spawning new tiles, and detecting when no move remains. Reported on 1point3acres' Glean bank; reconstructed in our own…
Last asked Sep 2026
Design an online tic-tac-toe service over REST, with matchmakingSystem designTwo players are matched online and play tic-tac-toe from their own devices. Clients may only talk to the server through REST APIs, and the service runs in several regions. Design…
Last asked Aug 2026
Count legal tic-tac-toe game sequencesCodingCount the legal game sequences on tic-tac-toe boards, including a 4x4 three-in-a-row variant, enumerating valid play orders with backtracking. Reported on 1point3acres' Decagon…
Last asked Jul 2026
Tic-tac-toe with K playersCodingImplement tic-tac-toe for k players on an n x n board. Players take turns placing their marks. However large the board is, a player wins as soon as they have three of their marks…
Last asked Jul 2026
Design a snake gameOO designDesign the snake game in object-oriented code: the board, the snake, food, moving, growing, and detecting collisions.
Last asked Jun 2026
Ultimate tic-tac-toeCodingImplement ultimate tic-tac-toe: a 3x3 grid of 3x3 boards where each move directs the opponent to a specific sub-board, with meta-board win detection. Reported on 1point3acres'…
Last asked May 2026
Design a poker gameOO designDesign the classes for a poker game: cards, deck, players, hands, betting rounds, and deciding the winner. Show the main methods, how a round flows from deal to showdown, and how…
Last asked Jan 2026
Validate a tic-tac-toe board stateCodingGiven a tic-tac-toe board in the middle or at the end of a game, decide whether it could have been reached by legal play: X moves first, players alternate, and nobody moves after…
Last asked Dec 2025
Design an online Minesweeper platformSystem designDesign a platform where people play Minesweeper online. Cover generating boards, the API for revealing and flagging cells, where game state lives and who is trusted to know mine…
Last asked Nov 2025