Pocket Gaming Central

Roblox is a massively popular online gaming platform that allows users to create and play games created by other users. 

It offers a wide variety of games, including adventure, racing, puzzle, role-playing, and simulation games. Some of the most popular games on the platform include Adopt Me!, MeepCity, Brookhaven, Royale High, and Theme Park Tycoon 2. 

However, Roblox games don't have a specific genre classification, so it's hard to know the exact percentage of combat games. But as I mentioned before, it's likely that a significant number of games on the platform fall under this category, as many players enjoy playing games that involve combat and action.

I don't have the exact percentage of all Roblox games that are combat games, but it is likely that a significant number of games on the platform fall under this category, as many players enjoy playing games that involve combat and action. 

Roblox is a user-generated content platform and there is a wide variety of games available, from simple puzzle games to complex multiplayer games, so the percentage of combat games may vary. It's possible to check the top games on Roblox, and then check the genres of those games, that would give a better idea of the percentage of combat games on the platform.

Some other popular online gaming platforms include:

Steam - A digital distribution platform developed by Valve Corporation, which offers a large library of PC games and other forms of media.

Xbox Live - A gaming service for the Xbox gaming console, which offers multiplayer gaming, free games, and special deals for Xbox owners.

PlayStation Plus - A subscription service for PlayStation console owners, which offers online multiplayer gaming, free games, and special deals.

Google Stadia - A cloud gaming platform that allows players to stream games on their devices