For Fun (エンジョイ, Enjoy) is an online mode that appears in Super Smash Bros. 4. In this mode, players fight each other in four-player free-for-alls or two-on-two team battles, with all items turned on. All stages are playable except for Final Destination and Miiverse; stages are selected at random with no player choice. In the 3DS version, some stages are altered to remove hazards that may cause lag in online play. In the Wii U version, stages that promote camping are rarely picked (The Great Cave Offensive, Jungle Hijinxs, Palutena's Temple and 75m). This mode affects the player's character records, but does not keep explicit statistics on the player's performance (in particular, only the player's number of wins are recorded while their losses are not).

For Glory acts as a counterpart of For Fun in that it allows for one-on-one matches and disables all items, as well as allowing only Final Destination and Ω Form stages.

Because For Fun was deliberately designed for unbalanced "fun" play, it has not been analyzed and reviewed as thoroughly as For Glory by the Smash community. While much better-received than Basic Brawl, it has been met with some criticism, most notably the inability to play with fewer than four players (resulting in frequent online lag), as well as commonly hosting taunt matches despite the presence of a hard-coded taunt limit.

See also