single-player       
adjective (also singleplayer) uk/ˌsɪŋ.ɡəlˈpleɪ.ər/ us/ˌsɪŋ.ɡəlˈpleɪ.ɚ/
 (电脑游戏)单人的
(of a computer game or a version of it) intended to be played by only one person
  He first encountered online gaming in the early '80s through single-player role-playing games. 他在80年代初通过单人角色扮演游戏第一次接触到网络游戏。 
 This is a single-player 3D version of a classic game.
 I think the lack of a singleplayer story mode is a real oversight.
 Compare: multiplayercooperative adjective (DONE WITH OTHERS)
 - More examples
- Although the game includes a single-player "story" mode, you can have more fun when you compete in multiplayer mode against up to three of your buddies.
- There are 24 single-player missions in the game.
- It is possible to play single-player games against bots, but the best part of the game is its online multiplayer.
- The game is only single-player.