8 [Similar Anime] Like Sword Art Online Alternative: Gun Gale Online

Both series feature girls playing VRMMOs with accidentally broken min-maxed characters. They socialize in the game and engage in droup PvP events heavily relying on unconventional tactics, with fun interactions coming ahead of common sense.

Cute Girl(s) with a gun made by the same studio with the same character designer.

Both are fun, endearing, and mostly lighthearted shows with predominantly female casts (there's also an additional focus on moe girls) and a focus on action. There's a driving conflict in both (Both with significant consequences for the main cast if they fail, although GGO's is certainly heavier), but each show feels a lot more about the competition and combat aspects of the sport/game. GGO has a somewhat more developed cast whereas GuP has a very wide but more one-note cast; both are charming in their own ways. The battles in both are varied, surprisingly thought out, and well-executed. I wouldn't describe either of these shows as particularly deep, but both are very fun and entertaining light watches (both are only one cour as well). Overall, I feel both of these shows are underrated gems with a lot better quality of writing than one would expect (albeit they're somewhat cheesy).

Adult (and cute) woman playing videogames.

Both have Great worldbuilding and sick ost,Many intense scene tho

equally in terms of battle royale game.

loli playing with real guns

Battle royale.
D-Game battle royale take place in real world.
GGO battle royale take place in virtual world.