It's very common in the USA for video games to come with a health warning that playing them can cause seizures. For example, the 2010 release of Sega's Sonic Colors for Nintendo Wii contains the following warning in its instruction manual:
Some people (about 1 in 4000) may have seizures or blackouts triggered by light flashes or patterns, and this may occur when they are watching TV or playing video games, even if they have never had a seizure before.
Is there medical evidence that video games can trigger seizures in people with no prior history of seizures? It's not clear if this warning is present due to actual medical evidence or whether it is more a reflection of best practices or regulatory compliance issues (e.g. the presence of a statute requiring the warning despite no medical evidence to support it).
I have no problem believing that video games can be a identified risk factor for people who already have a diagnosed neurological disorder such as epilepsy.