Frontlines is the game that proved Roblox can run a hyper-realistic, twitchy first-person shooter without breaking a sweat. If you peek at the screen, you will think someone booted up Modern Warfare. Characters sprint, slide, aim down iron sights, and drop each other in fractions of a second.

From a content perspective, it strips out the R-rated campaign storylines, torture scenes, and explicit foul language of mainstream military franchises. What remains is pure competitive mechanics: 7-on-7 matches, objective captures, hit splatters, and weapon progression. The friction points here are competitive salt in the chat box and the compulsive loop of grinding weapon XP.

If your middle schooler or teen wants to scratch an FPS itch without you buying an M-rated disc, this handles the job cleanly. Just make sure they keep their session times intentional so match streaks do not eat their whole afternoon.