Frontier: Siberia

Frontier: Siberia is an atmospheric tower defense set in a Soviet-era science disaster. After a containment failure at the secret station "Object-31", a mutagen virus spilled into the taiga — infected wildlife now waves toward the station. You are the last surviving engineer: build defenses from scavenged gear and hold the line until evac arrives. Inside: • 10 tower types — from a machine-gun nest and flamethrower to an EMP cannon, sniper and plasma battery; • 12 enemy types and bosses: infected wolves, armored bears, flying ravens, regenerating boars, an overgrown mammoth, a swarm queen; • tower synergies: freeze + kinetic, radar + sniper, tesla + crowd — real tactical depth; • 90 campaign levels across 9 chapters with rising difficulty and bosses; • a global upgrade tree paid in crystals — permanently boost every tower; • a daily challenge with special rules; • scientists' diaries that reveal the story of the disaster; • a total-stars leaderboard;