It's called Cacha Cacha Aliens for iOS. Ross wanted to know "what it was like making games," and so founded the studio. The avid gamer hopes to get around to other platforms.
The UK personality revealed his motives behind the new game studio during a special Question Time at the UK arts academy BAFTA, where he was joined by industry notables.
"The reason I got into making games is because I really wanted to know what it was like making games," said Jonathan Ross. "I enjoyed playing them so wanted to try the creative process." He was in the company of Sport's Interactive CEO Miles Jacobson, NaturalMotion's Torsten Reil and Tom Stone of TT Games.
"We started discussing consoles, because when we started showing our game around some console people came to us as they really liked us," he confirmed. "But it was designed and created for iOS, and we want to keep it for that for now."
"Hopefully we will make games for other platforms, including console and some handhelds, perhaps," he added. The film critic also spoke of the co-existence between premium and free-to-play models. "There's a biodiversity of models in television, and there's biodiversity in cinema," he commented. "Let's have a bit of biodiversity" in games.
Hotsauce Interactive is said to have experience developers on staff. Ross also revealed his 2012 highlight games as Microsoft's blockbuster Halo 4 and Imangi Studios' mobile game app Temple Run.