15 Obscure Single Player Games You Likely Missed Playing

Trepang 2 

Trepang 2 is all about gunning and running through arenas, and that core gameplay loop is an innately satisfying mechanic that rarely gets stale. The story might not hit its stride, but Trepang 2 knows what it does best and does a good job of keeping its strengths at the center of the experience. The fast-paced shooting mechanics go really well with special abilities like bullet time and cloaking – which creates an open-ended gameplay loop where you can swing in and out of cover to take down entire squadrons of enemies.