Forge! Huah! What is it good for? More than you might think. Halo 5: Forge has arrived free on Windows 10 and while it’s not full Halo 5 with the FPS’s campaign and all its multiplayer jazz and whatnot, it’s more than the level editor it initially seems. I mean, yes, it does have a level editor, but also it also supports 16-player online Halo action with the Arena multiplayer mode and player-made modes and minigames. Forge is a bit like a basic Garry’s Mod, and that’s no bad thing for a freebie.