Modern dump or feature phones come with some 3D capabilities. However, the performance is pretty low but it’s still possible to create a decent game for them.
This game was made for KaiOS phones, which are running on the remains of Firefox OS, thus they are web-based but don’t have touch screens.
Popular device are the Nokia 8110 (banana phone) or their flip phones.
There devices are targeted for emerging markets and digital detoxers.
AirshipCombat3D also features an online multiplayer mode.