👆 Star Furnace Foundry

<p>Star Furnace Foundry drops you into the blazing heart of a star and dares you to build the hottest plasma empire on the web. It all starts with a single tap on the furnace: each press mints a little Plasma, and Fuse hydrogen into plasma and bottle a sun's worth of energy.</p><p>Spend what you earn to hire helpers like Little Fusioneers, Busy Fusioneers and eventually Cosmic Fusioneers. They keep working even after you stop tapping, so your Plasma ticks up every single second — close the tab and you'll come back to a tidy pile of offline earnings. Stack boosts such as the "furnace Festival" to multiply everything, then chase achievements that hand you a permanent edge.</p><p>When growth slows, ascend to bank Nova Cores: each one you hold quietly supercharges all future runs, turning a slow start into an avalanche. It is built to play itself while you watch the counters climb, and it runs instantly in your browser on phone, tablet or desktop — no download, no sign-up. Fire up Star Furnace Foundry, find your rhythm, and see how big an empire plasma can buy.</p>

How to play

• Tap or click the furnace (or press Space) to earn your first Plasma.
• Open the Buildings tab and buy Little Fusioneers to start earning Plasma automatically.
• Reinvest into stronger helpers like Turbo Fusioneers and Cosmic Fusioneers as costs climb.
• Grab Boosts and unlock achievements to multiply how much Plasma you make.
• When progress slows, hit Ascend to bank Nova Cores for a permanent boost, then climb faster.

Controls

Tap or click the subject to earn (Space or Enter also taps). Press number keys 1–9 to buy buildings, P to ascend and M to mute. Fully playable with touch on mobile.

Features

• Hottest plasma theme set in the blazing heart of a star
• Five upgradeable helpers from Little Fusioneers to Cosmic Fusioneers, each with its own boosts
• Idle income that keeps earning while the tab is closed, with capped offline catch-up
• Prestige system: ascend to bank Nova Cores for a permanent, stacking multiplier
• Achievements, satisfying tap combos, sound effects and an automatic local save

FAQ