I’m really glad to hear that you enjoyed the game!
Regarding the temperature, it actually does influence the game, but in stages! The game features a Heat System that directly scales your production multiplier based on temperature.
When you were at 81°, you were still within the ‘Safe’ zone (which spans from 20° up to 100°). In this zone, the multiplier is exactly 1.0x, meaning your earnings progress normally—which is why you didn’t notice a change!
Here is how the system breaks down:
Over 100°: The game enters a Warning state, and your earnings drop to 70% (0.7x).
Exceeding Max Temp: It triggers an Overload, punishing your income down to just 20% (0.2x).
Below 0° (Sub-zero): This is where the magic happens! Freezing your system boosts your profits. If you manage to drop it all the way to absolute zero (-273°), you get a massive 4.0x multiplier!
And that is exactly what the Fan is for! Using the fan to cool things down into sub-zero temperatures is the key to unlocking those massive revenue boosts.