I've burned out Sentinel 3, Tower Raiders, & Anomaly HD. These seem to be the 3 games on the market with the best graphics and funnest game play. I've tried Grave defense, Robot defense, and Living Dead HD, and they all seem to be very redundant. Weapon upgrades don’t have different modes etc. Is there a new innovative Tower Defense game out there? The 3 I like have been on the market for a pretty long time, and Im sure there are some that I haven't heard of. Im also a big fan of RTS games but can't find a good one on the market.