AI-assisted page check: the v1.3 notes describe touch controls, but ‘Good to know’ still says ‘Keyboard and mouse only. There is no touch or mobile support.’ Removing that older line would make the supported devices clearer. I couldn’t complete a meaningful run in this automated browser, so I can’t judge the wave ramp or wood pickups.

I'd tune the ramp as a budget, not hand-placed counts. Give each enemy a cost (wisp 1, brute 4, splitter 3 as placeholders), then set budget(w) = base × growth^(w−1). For example, base 10 with growth 1.25 gives 10, 12.5, 15.6 per wave. Spawn until the budget runs out, and cap enemies alive at once so a new type can't swarm the fire by itself.

Two checks catch most unfair spikes: time-to-kill for each enemy in the wave where it first appears, and a dead-air check (if nothing is alive for more than about five seconds, the wave will feel boring).

Keep the wave table in a CSV (wave, wisp, brute, splitter, hp_mult) so you can tweak numbers without touching code.

For the wood question, logging warmth lost per wave against wood collected would show whether the loop is fair.