Is there a fast way to get more coins?
Absolutely! You can watch short ads to temporarily boost your gun's coin generation rate. You can also spin the Lucky Wheel to win massive piles of Coins, Gems, or even premium Gun Crates!
Why can't I buy the high-level guns in the shop?
The Shop's inventory is strictly tied to your merging progress. The rule is: The best gun you can buy is always 3 levels below the highest gun you have successfully merged yourself. If you want to buy better guns, you have to do the work and merge them on your board first!
Do higher-level guns actually play differently, or just have bigger numbers?
Yes, they play differently! Beyond just flat stat boosts (like higher damage and faster fire rate), different tiers introduce entirely new weapon classes. You'll upgrade from semi-auto pistols to full-auto rifles, shotguns, and explosive launchers, providing massive visual upgrades and much stronger crowd-clearing capabilities in combat.