Flagman is a short Flash platforming game with a simple objective: grab the flag, place it where it belongs, and exit the level. Certain levels have some gimmicks to spice things up such as portals and spikes. In-between certain levels are boss battles where the flag only spawns when the boss is defeated.

Mikewillplays in this run beats the game in record time by making good use of a glitch where the player can start a level already carrying the flag, cutting down large portions of levels.