19 Games like Shadowgrounds on Xbox that you should try

Three separate campaigns — Marine, Alien and Predator — each rebuilding the game around a different body: the Marine's motion tracker and dread, the Alien's wall-crawling, the Predator's cloak and vision modes. The Marine campaign is the one that holds up. The other two are short and thin by comparison, and the multiplayer that carried it in 2010 is long dead.

A co-op horde shooter whose swarm tech is the draw: hundreds of zombies climb over each other into structures, and the class system rewards coordinating rather than scattering. Levels are short and replayable. The shooting itself is functional but unremarkable, and the campaign chapters are thin connective tissue between the set-piece swarm moments.

Gordon Freeman became the most popular nameless and voiceless protagonist in gaming history. He is painted as the most famous scientist and a hero within the world of Half-Life, and for a good reason.

DOOM 3 is a first-person shooter, the third installment in the series, serving as a reboot to the previous games. ###Plot As the game is set in a science fiction universe, the events span accordingly.

id's follow-up to Doom, and the first with true 3D movement — rocket jumps, full vertical aim, and a Lovecraftian gloom scored by Nine Inch Nails. The movement still feels quicker than most modern shooters. Long-time players tend to prefer a source port to the official re-release, which quietly altered difficulty tuning and is treated as a compromised preservation job.

Everything the first game did plus melee weapons, daylight campaigns and special infected that force the team apart rather than just damage it. The AI Director still shapes every run. It absorbed the original so completely that the community split never healed, and the campaigns lean on finale set pieces that become rote once you know the safe corners.

The AI Director is the whole design: it places hordes and items based on how well you are doing, so no two runs of a campaign play the same and tension stays authored without being scripted. Four campaigns only, which is thin, and the sequel superseded it so completely that finding populated servers now takes patience.

Portal 2 is a first-person puzzle game developed by Valve Corporation and released on April 19, 2011 on Steam, PS3 and Xbox 360. It was published by Valve Corporation in digital form and by Electronic Arts in physical form.

A conventional military shooter wearing Quake's skin: corridor combat with heavy weapons, at its best in the mid-game once the Strogg conversion sequence gives it a hook. Level design is repetitive metal hallways for long stretches, and the squadmates who accompany you do little beyond soaking damage and opening doors.

Its enemy AI is still the reference point twenty years on: soldiers flank, suppress and call out movements, so firefights unfold differently each time. Slow-motion makes that legible instead of trivial. The horror sections have not aged as well — the same office corridors repeat for hours, and the scares telegraph themselves long before they land.

###Interesting mix The game is a mixture of 2D shooter and puzzle genres developed by Shadow Planet Production and released by Microsoft Studios for its Xbox360 console. As part of the HumbleBundle pack, a soundtrack for the game is available, which was released separately.

Wider environments and better lighting than the original, with the slow-motion shooting mostly intact and a mech section that breaks up the pacing. The AI is noticeably less sharp than in the first game, though, and the horror leans on jump scares rather than the dread the original built. Competent, rarely surprising.