Aaaalright guys! I'm getting a Nexus 7 from my gf for Christmas, yay! I'm looking for some Android-only games (and/or apps) that aren't available on iOS, I already have an iPhone for those.

Input is very muchly welcome! Either just a "best of all"/"Personal favourites" of yours, personally I like TBS/strategy best, but I'm open for anything.
Touch one because most games come out on both.
I have an iphone and the games I have on my nexus that I also have on iphone play a lot better on nexus so might be worth trying them.
Here is some stuff I currently have installed
Dark meadow
Free. Has IAP's but you dont need to buy any of them. They basically buy you gear. There is plenty of gear you can buy just by playing the game and finding money. You can also find items but they are rare. Its like a first person adventure game mixed in with infinity blade style combat. When you die you wake up agian in your room. The idea is to find a way out of the mansion. I have only put a couple of hours in so far but its pretty fun and looks really nice as well.
Dead Trigger
Zombie survival first person shooter.Again its totally free and you definitely don't need to spend any money to play it. Again there is just a bunch of stuff you can buy with there IAP credit but you dont need any of it. There are plenty of things you can buy with the standard currency. You can also plug in an xbox controller and play it with that.
Shadowgun and
shadowgun Dead zone
Shadowgun is a single player game that costs a few £ but I got it in a sale. Its a gears of war style game from a gamplay point of view. Story is a bit cheesy but it is fun and with the free expansion its about 6-8 hours long. I also had this on my iphone. The bigger screen is a lot nicer to play on and if you get the THD version it has extra effects that take advantage of the tegra 3. Dead Zone is the free online multiplayer version of this game. IAP's are purly for cosmetic stuff or paying for a premium account which gives you a few perks. Both work with xbox controller.
Heros of order and chaos
Just came out yesterday. Only played it a little and seems OK. Its free and its a MOBA. It takes a very similar format to the free to play MOBA's you find on PC.
Hero's call
Again its free. Havnt seen a single need to use IAP yet. Again I think its just to buy gold for if you have no patience. Considering its a dungeon crawler in the vein of diablo (but slower paced) I dont know why you would ever buy anything as the point of these games is finding loot, not buying it lol. Has a pretty nice control system.
I plan to pick up both
dead space and the
mass effect game when I see them on sale. I played though dead space on my iPhone and loved it. Think it will be a lot nicer on the nexus 7 screen. Mass effect I got about half way through until the iphones tiny screen just annoyed me to much and I stopped.
Again these are all available on iPhone as well but almost everything I can see worth playing is on both systems. However if you only have a iPhone and not a iPad its def worth trying them out. Especially considering almost all of those are free with IAP's you dont NEED to buy.
Oh yeah and
plague inc is cool if you havnt already played it