Portal 2 – fun, clever, too easy. Recommended: 4.5 of 5 stars.
Singularity – fun. It is an amalgam of four games you’ve played already plus some interesting twists in the tool/weapon department. The few difficult spots got a lot easier when I finally realized that the “stasis bubble” is a super-weapon. Fairly mindless fun. Recommended: 4 of 5 stars.
Metro 2033 – not fun. Interesting artwork-wise, but the gameplay was awful. Your number one concern while playing the game? Forget the plot, finding your way around, most of the monsters, forget the enemy soldiers: the key to survival is nursing the condition of your gas mask and your too-small supply of gas mask filters. Filters are not fun. Not recommended: 2.5 of 5 stars.