Strategy

Heliostat!

Twelve mirrors feed a solar tower and every one of them drifts off aim. A selector light sweeps the field — tap while it sits on an amber mirror to snap its beam back, hold out for red to score a perfect, and never waste a tap on a mirror under cloud shadow.

👆 Tap anywhere to re-aim the selected mirror ← All games

Heliostat — Free Online 3D Solar Mirror Strategy Game

Heliostat puts you in charge of a small solar power field at the end of the day. Twelve tracking mirrors stand in a four-by-three grid in front of a receiver tower, and each one throws a beam of reflected sunlight onto the glowing lamp at the top. The sun keeps moving, so every mirror slowly drifts off target: its panel turns from cyan to amber, then to a flickering red, and you can watch its beam slide off the receiver and into empty sky. A mirror that drifts all the way stalls, goes grey and feeds nothing for four seconds. The tower's charge drains constantly, and only aimed, sunlit mirrors refill it. If the charge runs out, the field blacks out and the run ends.

How to play

You never have to hit a small 3D target. A selector light hops from mirror to mirror in a snaking sweep, a fifth of a second on each, and a tap anywhere on the screen re-aims whichever mirror it is resting on. Tapping a mirror that has turned amber is safe and worth five points. Letting it go one more lap until it flashes red earns a perfect worth twelve, but if it stalls before the selector comes back you lose the multiplier. Tapping a mirror that is still cyan is a fidget: it breaks your combo, and the wasted motor drive costs the tower charge, so mashing the screen drains you dry. Three clean re-aims in a row raise the multiplier one step, up to five times, and it multiplies the energy you deliver as well as the re-aim bonuses.

Clouds and the sunset sweep

Cloud shadows creep across the grid. A shaded mirror delivers no light, and a tap on it fails and costs both combo and charge, so watch where each shadow is heading and skip the mirrors it is about to cover. At 120 points the sunset begins: from then on every tap reverses the selector's direction, and a second, slower cloud enters from the opposite side. Each tap is now a steering decision too, because turning back to save one mirror can leave a red one on the far side of the field without a visit.

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