SpacePi Unblocked

SpacePi asks you to defend something without shooting at all. A tiny orange base sits in the middle of the screen, red enemy streaks race inward from every side, and you block them by sketching short white barrier lines in their way. Each time a streak crosses one of your lines, both burst apart. Meanwhile the base swells toward a goal size. Jack Rugile built it for the js13kGames contest, where everything must fit in 13 kilobytes, and every shape is drawn in code. It plays unblocked here, best with a mouse.

The Goal of Each Level

From the main menu, open the upgrade screen and choose one of thirteen levels lined up along the bottom. Only the first is unlocked to begin with, and each win unlocks one more.

At first the base is barely a dot. A Completion bar along the top tracks its progress toward the required size, and that requirement grows on later levels. Every red streak that reaches the base bites a piece off it. Let it shrink to nearly nothing and the level fails. Grow it to full size and you win.

Power, Coins and Power-Ups

Lines are not free. Each one drains power in proportion to its length, shown on the Power bar, which refills slowly.

Broken streaks often leave coins behind, and sometimes a power-up. They drift toward your pointer when it gets close, not toward the base. Later levels pay more per coin.

Spend coins on ten upgrade tracks of five steps each, covering things like power capacity, power recharge, base toughness, magnet strength and better drops. The four power-ups either slow the attackers, remove the power limit, speed up base growth twofold or scatter a shower of coins. Your browser keeps your coins, upgrades, records and stats.

SpacePi controls

To do this	Keyboard	Mouse	Touch
Draw a blocking line	—	Click and drag across the screen	Drag a finger across the screen
Collect coins and power-ups	—	Hover the pointer close to them	Touch close to them
Pause and unpause	Space	—	—
Shop for upgrades and choose a level	—	Click the buttons	Tap the buttons

Strategy: Spend Less, Score Less

Because a low score wins, efficiency is the whole game.

• Draw near the threat. A short line just ahead of a streak costs less power than a long wall, and blocks just as well.
• Protect the opening seconds. The base is at its smallest at the start, and a single early hit can sink a level. Watch every edge from the first moment.
• Sweep for coins between attacks. Drag the pointer toward drops in quiet moments, since the magnet follows you, not the base.
• Buy power upgrades first. Capacity and recharge set how much you can draw when several streaks arrive together.
• Farm an easy level if you are short. Replaying a cleared level is a low-risk way to earn coins for the next upgrade.
• One good line beats three rushed ones. Every line adds 100 to your score before length is even counted.

A Clever Twist on Defense

SpacePi feels part puzzle, part reflex test, with an upgrade loop that rewards coming back. It suits players who like neat, efficient solutions. For more drawing-based play try Coil, or defend from the ground in City Shield.