Ah, ok. Playing the original Half-Life in VR is great for the nostalgia value, though probably not that great if you're not familiar with the game itself. There's a bunch of great VR ports of old games for the standalone Quest by developers calling themselves "Team Beef". Doom 1, 2 and 3, Return to Castle Wolfenstein, Quake 1, 2, 3 AND 4, Jedi Outcast, Jedi Academy... the original Tomb Raider is coming soon too.

The real draw is to see those familiar game worlds from a new perspective.