All in All a blend of Time Manipulating and a Solid FPS gives you an Awesome and Fun to play result
From the gameplay point of view singularity is a solid FPS which when mixed with the powers of the TMD (a.k.a. the Time Manipulation Device)is a real fun to play shooter there are a variety of weapons ranging from simple 1950's guns to E-99 powered guns which let you literally steer the bullet to kill hard to get kind of enemies from far away. the powers of the TMD are also pretty awesome and also have been implemented very well, you can easily revert things to your advantage like a broken ammo case which when reverted will give you ammo or health etc,the second option is the age function in which you can as the name suggests age things to your advantage like walls blocking your paths etc.Using these weapons to kill the mutated humans is also a really fun experience.
From the multiplayer aspect you can play as a variety of players like different types of soldiers and different types of creatures, the basic mode of gameplay for the soldiers is to shoot around, kick some ass with the TMD and for the creatures the basic gameplay is vomiting over the soldiers, throwing fuel barrels at soldiers and also becoming invisible for a short period of time. The textures are quite good and Raven have again proved the worth of the Unreal 3 Engine. The Environments look phenomenal and its always nice to explore in the game.
All in all Singularity delivers quite an enjoyable experience which will stick with you even after you have finished playing the game
For all you gamers out there i thoroughly recommend this game to all you gamers out there and if you can please check this game out its awesome and you really won't regret buying it.