In the end I bought all four during the weekend. Played SteamWorld Dig until I found the second cave, the digging was strangely addicting. Guacamelee I reached the second city, but I'd prefer to co-op this game instead of going at it alone. Teslagrad is a puzzle platformer, it has no text, everything is visual; although the game stutters while loading sections. And last Swords&Soldiers, already played it on Wii, decided to go with the Gamepad controls and it felt kinda flash game, wasn't like that with the wiimote.
Offers still available until next week.