Solar plane

Profile

Attribute	Value
World	Desert, #9 of 25
Unlocked by	clearing the previous world
Launch power	40, +1 per Slingshot level
Top speed (cruise)	65 km/h
Income multiplier	×256 base → ×5,734 maxed
Evolution stages	5
Upgrade levels	70: 25 Engine, 25 Income, 20 Slingshot
Course length	4,530 units
Cost to max everything	1.78T

Flight and distance

The slingshot sets your start, the Engine holds your speed, and you glide as far as they carry you, earning Coins the whole way. Your best distance is what unlocks the next world, and it climbs as you put Coins into the tracks below.

Evolution

Every 5 Engine levels adds a part.

Home world

The Desert page has the full map and the flight walkthrough.

Upgrades

All 70 levels, and what each costs. Income costs the same in every world; Engine and Slingshot get steeper each world (see Economy).

Level	Engine	Income	Slingshot	Plane evolution
1	3.91M	100	3.91M	Base plane · 65 km/h
2	6.45M	150	6.45M	—
3	10.65M	225	10.65M	—
4	17.57M	338	17.57M	—
5	28.99M	506	28.99M	—
6	47.83M	759	47.83M	Left Wing · 65 km/h
7	78.91M	1,139	78.91M	—
8	130.21M	1,709	130.21M	—
9	214.84M	2,563	214.84M	—
10	354.49M	3,844	354.49M	—
11	584.91M	5,767	584.91M	Right Wing · 65 km/h
12	965.10M	8,650	965.10M	—
13	1.59B	12,975	1.59B	—
14	2.63B	19,462	2.63B	—
15	4.34B	29,193	4.34B	—
16	7.15B	43,789	7.15B	Tail Panel · 65 km/h
17	11.80B	65,684	11.80B	—
18	19.47B	98,526	19.47B	—
19	32.13B	147.79K	32.13B	—
20	53.02B	221.68K	53.02B	—
21	87.48B	332.53K	—	Propeller · 65 km/h
22	144.35B	498.79K	—	—
23	238.18B	748.18K	—	—
24	392.99B	1.12M	—	—
25	648.43B	1.68M	—	—

The curve is brutal at the top: the final 5 Engine levels are 92% of the whole Engine track. Budget for the last stage, not the first.

All planes · All worlds