Dungeon Defenders?

Defender's Quest is pretty easy i think.

Plants vs Zombies and Kingdom Rush.
And I've heard good things about Defense Grid.

I'd recommend Kingdom Rush.

i liked those:

• tower wars
• ibomber defense pacific
• anomaly warzone earth
• Monster Mash

Plants vs. Zombies, but only the first game.

War in a Box: Paper Tanks

Plants vs zombies first one and you can get on steam

Plants vs Zombies

Dungeon Defenders 1. Not the 2nd one that one is ehhhhhhhh

I have 300 hours on it and still not 100% done, also community is nice since there arent very much of us left

With a curving difficulty, Plants vs Zombies. Go for it!

iron brigate - I won it on SG and finished it ~2 weeks ago. Cool game similar to Sanctum, but 3rd person, with co-op potential. If you pick it up, give me a sign, I'd like to try it in MP.

I remember playing Go Home Dinosaurs when trading cards first came out - pretty laid-back on the difficulty.

OTTTD and Kingdom Rush is what i can recommend

I got Orcs Must Die 2 Complete from a Humble Bundle a year ago, and it's a really good easy to learn tower defense game.

This one is the most addictive that I ever played on my tablet:
Bloons TD 5 - http://store.steampowered.com/app/306020/

Defend your Life

I always thought Radiant Defense was pretty, but I've only played it on mobile.

http://store.steampowered.com/app/302970/

+1 for OMD and OMD 2 (have 1100 play hours between them, the first is SP and the second is SP/CO-OP)

The layout of the maps and the upgradeable traps that can combo hit the enemies and your personal (magic) weapons make for great fun. :-)

I was gonna say Sanctum 2, but I see you already have it, that's probably the best one I've played so far. You might want to try Orcs Must Die 1 & 2

space run is pretty easy to me thus far...

can second defend your life. but the brain level can be tricky and a grind.

Defense Grid (1 and 2) are the best TD games.

Stand on top of your house and spray anyone that walks by with a garden hose. The difficulty may ramp up once the police arrive, though.

Sanctum 1 2