MotoHeroz and its HD counterpart are free on iOS for 48 hours along with Rabbids Go Phone Again and Rabbids Go HD, publisher Ubisoft has announced.
Elsewhere, God-game Babel rising is on sale for £0.69.
Developed by Trials creator RedLynx, MotoHeroz represents a more cartoony spin on physics-based stunt driving and races. Our Chris Schilling was quite fond of it when he named it the Eurogamer App of the Day.
"It may be more gimmicky than Trials, but its physics and systems are every bit as robust. And when you invariably screw up, you know you're less than a second away from another shot at getting it right. It's another downloadable delight from a developer that takes having fun very seriously indeed," he wrote in his appraisal.