Tony Hawk's Pro Skater HD, which arrived on XBLA last week and is coming to PC and PS3 later this year, has already sold 120,000 copies.
With Pro Skater HD, developer Robomodo relaunched the arcade skateboarding franchise with its first downloadable title.
Josh Tsui of the studio told Gamasutra that day-over-day sales are "staying very consistent" because of word of mouth.
"People are more apt to try games that are smaller and downloadable," he said.
The game landed on Xbox 360 as part of the XBLA Summer of Arcade. It will arrive for PSN in August and PC later this year.
"It should be interesting to see the sales on PC — we've been surprised how many people are asking for that," said Tsui.
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