Its quite a simple concept. You fill your backpack with items, looking for synergies that create powerful combos, and use those items to battle other players. But the strength of this game is entirely in its execution. Theres a huge number of strategies you can employ, with each character having significant differences in the types of strategies you can employ. Exploring new strategies based on the random selection of items you find in the shop between battles makes it fun to discover new ways to build up your backpack. You can choose to play in either a ranked or unranked mode, depending on how serious you want to take the game. Some items can also combine into new items if placed next to each other for one battle, so discovering the recipes available for each character provides a longer term goal to shoot for if ranked matchmaking isnt for you.

My one criticism is that you're highly dependent on how RNGesus is feeling at the moment. Because of its limited selection, and large number of items, it can sometimes feel impossible to get the items you want.

All in all, Backpack Battles is a great casual experience for people who love searching for synergies and crafting fun combos, or are looking for a clever and highly replayable autobattler experience.