I personally played the following the most on gamepad:
Trine 2 (it's actually BETTER on the gamepad than the television, as it requires drawing on the thing).
Bit.trip presents: runner 2 (platforming rhythm game)
Little inferno (just burning stuff. it's casual and there's no challenge whatsoever, so if you're looking for a challenge, this is NOT it).
Since you're in the US, you really should check out the humble bundle (if you haven't already). If guacamelee has an off-screen option, it's worth the purchase in itself.
Trine 2 (it's actually BETTER on the gamepad than the television, as it requires drawing on the thing).
Bit.trip presents: runner 2 (platforming rhythm game)
Little inferno (just burning stuff. it's casual and there's no challenge whatsoever, so if you're looking for a challenge, this is NOT it).
Since you're in the US, you really should check out the humble bundle (if you haven't already). If guacamelee has an off-screen option, it's worth the purchase in itself.