Games like Semicolon Island, ranked by tags and themes. Prices included.

1
Universe Sandbox
96%positive
PLN 51.70
2
Project Silverfish
93%positive
PLN 109.00
3
Garry's Mod
97%positive
PLN 17.99
4
Brickadia
80%positive
PLN 71.38
5
Archean
89%positive
PLN 94.99
6
Gabe's Mod
7
Starsand Island
83%positive
PLN 36.04
8
Stationeers
88%positive
PLN 99.99
9
People Playground
98%positive
PLN 35.99
10
Ocean Is Home : Island Life Simulator
64%positive
PLN 44.99
11
Starminer
74%positive
PLN 129.99
12
Spaceflight Simulator
97%positive
PLN 59.99
13
The Isolated
67%positive
PLN 4.49
14
Colonies of The Remnant
6%positive
PLN 47.59
15
Sand in a Box
75%positive
PLN 12.59
16
{Undefined}
64%positive
PLN 89.99
17
Sapiens
82%positive
PLN 102.55
18
Cozy Island
92%positive
PLN 30.74
19
Solar 2
91%positive
PLN 8.28
20
Colony Survival
92%positive
PLN 114.99
21
Sinking Simulator
85%positive
PLN 3.59
22
Settler's Odyssey
0%positive
PLN 22.99
23
SUPER BUILD
81%positive
PLN 53.99
24
Starbase
56%positive
PLN 18.60
25
StarShip-DF
100%positive
PLN 21.49
26
Out of Orbit
80%positive
PLN 53.70
27
Sol Survivor
PLN 52.94
28
Autocraft
56%positive
PLN 45.99
29
My Island Airport
30
Snap Game
84%positive
PLN 32.19
31
Yes Comrade
87%positive
PLN 49.99
32
Edge Islands
76%positive
PLN 33.39
33
ACTION SANDBOX
72%positive
PLN 35.99
34
ShipCrafter
92%positive
PLN 34.49
35
SOMEWHERE
100%positive
PLN 22.99
36
Southfield
37
Tiny Atolls
80%positive
PLN 45.99
38
Sinking Simulator: Legacy
80%positive
PLN 4.49
39
Physics Playground
73%positive
PLN 10.99
40
Oceaneers
89%positive
PLN 104.99
41
Coasteroid
42
Destruction Time!
73%positive
PLN 45.99
43
Oceanic Rails
PLN 31.86
44
AColony
88%positive
PLN 59.79
45
Island Notes
82%positive
PLN 41.99
46
Survival Advanced
33%positive
PLN 67.99
47
Art of Destruction
76%positive
PLN 22.99
What games are like Semicolon Island?

The closest matches to Semicolon Island right now are Universe Sandbox, Project Silverfish, Garry's Mod, Brickadia, Archean. The ranking compares 47 games by shared tags, theme and review quality, each with its cheapest price across official stores and keyshops.