Sandblast Lab Overview
Build and reshape a living particle sandbox, or command villagers through escalating Tower Defense waves against enemy forces and destructible bases.
Experiment freely with materials, structures, hazards, weapons, and NPCs in Sandbox mode, or defend your friendly base through increasingly difficult enemy waves in ranked Tower Defense mode.
Creative particle sandbox and wave-defense strategy
Top High Scores
Per-game ranked scores
Game Details
Released2026-08-03
Play StyleCreative particle sandbox and wave-defense strategy
DifficultyEasy to learn, increasingly challenging
PlayersSingle Player
Round Length10-30 minutes or open-ended
Mobile FriendlyYes
Fullscreen RecommendedYes
Points • Achievements • Trophies
Earn Points, Achievements, and Trophies
Logged-in players can earn saved game points, achievements, and trophies from verified Sandblast Lab runs. The public list below shows what to aim for before you press Play Now.
- Start a verified run and submit gameplay events from the game. Guest plays are good for practice, but they do not save reward progress.
- Earn achievement points by completing the listed milestones. This game can award up to 1,000 saved game points from achievements.
Achievements to Unlock
First Valid Run
Reach 1 valid runs during a logged-in run.
5 Minutes Played
Reach 300 total valid active seconds during a logged-in run.
15 Minutes Played
Reach 900 total valid active seconds during a logged-in run.
30 Minutes Played
Reach 1,800 total valid active seconds during a logged-in run.
1 Hour Played
Reach 3,600 total valid active seconds during a logged-in run.
First Score Submitted
Reach 1 score during a logged-in run.
Beat Your Best
Reach 1 score during a logged-in run.
Trophies to Chase
Sandblast Lab Champion Trophy
Set and hold the #1 score for Sandblast Lab. If another player beats the top score, the current champion trophy moves to them.
Sandblast Lab Mastery Trophy
Keep playing while signed in and complete the listed achievements for this game. Mastery-style trophies use the saved achievement and score progress from verified runs.
Goal
Experiment freely with materials, structures, hazards, weapons, and NPCs in Sandbox mode, or defend your friendly base through increasingly difficult enemy waves in ranked Tower Defense mode.
Scoring
Sandbox mode is unranked. In Tower Defense, the official leaderboard score is the highest wave reached during an accepted ranked run. Enemy defeats, resources, upgrades, units, base health, and active time are tracked separately for achievements.
Losing Condition
Sandbox mode has no failure condition. A Tower Defense run ends as a loss when the friendly base is destroyed, while leaving, resetting, or reaching an endless-mode checkpoint submits the current progress as completed.
How to Play
Choose Play Sandbox and select a blank, island, forest, or superflat world, or choose Tower Defense Mode for ranked progression.
In Sandbox mode, select materials, stamps, NPCs, weapons, hazards, line drawing, or the eraser, then place and interact with them directly in the world.
In Tower Defense, spend gold to queue sword, pistol, rifle, or rocket villagers, unlock stronger weapons, upgrade or repair your base, and start each incoming wave.
Clear waves by defeating the attacking enemies or destroying their base. Protect your own base, manage gold carefully, and continue through increasingly difficult waves.
Controls
- Drag or press on the world to paint and place objects. Pinch or use the mouse wheel to zoom, and use two-finger drag, middle-mouse drag, or right-mouse drag to pan.
- Use the on-screen menus and buttons for materials, units, upgrades, repairs, waves, saving, pausing, and settings. When possessing an NPC, use WASD or arrow keys on desktop, or the virtual stick and Action and Fire buttons on touch devices.
Tips
- Begin Tower Defense with several affordable sword villagers instead of spending all of your starting gold on one upgrade.
- Do not begin a new wave with a damaged base when an affordable repair could prevent an early loss.
- Balance weapon unlocks with base upgrades because stronger villagers cannot help if the friendly base collapses too quickly.
- Save gold between easier waves so you can unlock rifle and rocket villagers when enemy numbers and durability increase.
About Sandblast Lab
Sandblast Lab combines an open-ended falling-particle simulation with a separate strategic Tower Defense mode. In Sandbox mode, players can paint sand, dirt, grass, water, lava, and solid materials across a large zoomable world. Prefabricated trees, rocks, huts, walls, bridges, towers, gates, rafts, and bases can be added alongside villagers, enemies, fish, weapons, bombs, tornadoes, and alien UFOs. Materials react to gravity and the surrounding environment while NPCs move, fight, collect resources, and interact with constructed areas. Tower Defense changes the experience into a ranked survival challenge. Players begin with limited gold, queue armed villagers, unlock pistol, rifle, and rocket units, fortify or repair their base, and decide when to start each wave. Enemy forces become more numerous and dangerous as waves increase. The creative mode rewards experimentation, while Tower Defense focuses on resource management, preparation, unit selection, and protecting the friendly base for as long as possible.
Best For
- Players who enjoy creative physics sandboxes, building systems, destructible environments, and experimenting without a required objective.
- Strategy players who prefer single-player wave defense, resource management, upgrades, unit deployment, and increasingly difficult survival sessions.
Features
- Large zoomable particle world with sand, dirt, grass, water, lava, and solid materials
- Creative structures, NPCs, weapons, hazards, vehicles, gates, bases, and environmental interactions
- Ranked Tower Defense mode with escalating waves, gold, unit queues, weapon unlocks, repairs, and base upgrades
- Touch, mouse, and keyboard support with saved sandbox worlds, display settings, audio settings, and mobile controls