Infectious Smile Build and Survive Elevator Guide: Rocket and Fan Designs

Infectious Smile build and survive elevator systems transport players vertically to defensive high ground using rocket propulsion or fan airflow. Choosing between rocket carriages and fan lift shafts helps players balance construction speed with coin efficiency.

During the daytime preparation period in Build and Survive, human jump height reaches 7 blocks, allowing builders to scale structural pillars manually. Once the 5-minute night phase begins, jump height drops to 2 blocks. When ladders or standard stairs connect directly to ground level, infected runners use those same paths to reach player platforms. Enclosed elevator shafts provide rapid vertical repositioning while denying ground enemies direct foot access.

Core Elevator Mechanics

Elevators in this mode rely on motorized blocks connected to power sources. The game provides two primary functional components for vertical travel: rocket blocks and fan blocks.

Rocket blocks propel attached structures in the direction opposite their black exhaust port when activated by an electrical charge. They cost 250 coins to unlock and 70 coins each to purchase, with a maximum inventory limit of 8 units. Because rockets push blocks and players with forceful acceleration, builders place them beneath movable passenger platforms or wire them into multi-tier escape rigs.

Fan blocks generate vertical air currents capable of lifting human avatars directly into the air. Unlocking the fan block requires 500 coins, and individual fans cost 20 coins each, with an inventory cap of 6. Unlike rockets, fans do not move blocks; instead, they propel characters upward through open vertical shafts.

Constructing a Fan-Powered Lift Shaft

Fan elevators are the most common vertical transport systems in modern server rounds due to their low placement cost and rapid deployment during the 5-minute construction window.

1. Lay a flat foundation on the ground or tower floor using stone or steel blocks to protect the base against regular bomb explosions.
2. Place a fan block facing upward in the center of the base plate.
3. Erect an enclosed four-sided chimney around the fan perimeter using wood or concrete blocks to guide the ascending player.
4. Wire a lever block or battery block directly adjacent to the fan to activate continuous airflow.
5. Leave an exit opening on the target defense floor, and place a ceiling block above the shaft opening to prevent players from overshooting into the upper fog.

A fan produces steady upward propulsion that carries players directly to the designated exit floor. To prevent infected Smiles from riding the updraft into the defensive perimeter, builders place build and survive traps such as laser pads directly above the fan exhaust, or cover the fan face with a solid block when the lift is not in active use. Covering the fan texture neutralizes the airflow until the blocking tile is cleared.

Assembling a Rocket Elevator Platform

Rocket-powered elevators function as mechanical lifts that move physical block assemblies upward along a guide structure.

1. Construct a vertical guide column 6 to 8 blocks tall using metal truss blocks or steel pillars.
2. Build a small carriage frame consisting of 2 to 4 steel blocks fitted with a wooden chair block.
3. Mount a rocket block beneath the platform floor with the exhaust port directed downward toward the ground.
4. Attach a lever block to the carriage surface and connect wiring from the lever to the rocket block.
5. Seat the player avatar in the chair block and switch the lever on to ignite the rocket thruster.

Because rocket blocks carry a low durability rating of 50 and break after a single bomb detonation, housing the electrical connections behind protective outer blocks shields the mechanism. Releasing the lever cuts power to the thruster, allowing the platform to settle onto support beams built into the tower structure.

Elevator Design Selection

Selecting the proper lift mechanism depends on current team funds, available assembly time, and tower design.

Defending Elevators Against Smiles

Every elevator system presents potential defensive risks if left unmonitored during the night round. Smiles equipped with Jump Potions or Speed Potions look for vertical openings to bypass ground barriers.

To maintain shaft security, place a trap door block at the upper landing of a fan elevator. Trap doors open exclusively for uninfected humans, blocking infected players from dropping through or riding up. Positioning a shotgun turret block oriented down the center of the lift shaft stops enemies attempting to use the vertical corridor.

When building tall towers, players also utilize the :peak chat command during the final seconds of daylight. Typing :peak into the server chat immediately teleports the avatar to the highest constructed block directly overhead. Combining instant command positioning with internal fan shafts supports consistent survival routines for teams studying how to survive as a human. Learning the fundamentals of how to play across different map layouts keeps elevator bases functioning through all 5 minutes of the infection phase.