Games like Celestial Forge
Celestial Forge. These games share the most with it, and each one says why.

Orb idle
Also idle, physics, incremental
Buy orbs that bounce around the screen to earn money, then spend gems on upgrades that boost every orb at once.
3.1★ galaxy
Idle Dot Shooter!Updated
Also idle, incremental, space
A minimalist shooter where a turret fires on its own at drifting dots while you buy defence, drone, and economy upgrades and push into tougher galaxies.

NG Space Company
Also incremental, space
A space incremental about mining resources, exploring between stars and conquering systems.
4.2★ galaxy
Atomic Star
Also incremental, space
Make stars and vortexes in a lighter-on-text mix of The Modding Tree and The Clock Game.
4.0★ galaxy
Universal Reconstruction
Also physics, incremental
Stranded in a void with one skyrmion, you gather and combine components to rebuild reality. A Profectus remake inspired by Distance Incremental.
3.9★ galaxy
Idle TCGDormant
Also incremental, idle
An old-school browser incremental with a trading card theme, built to be finished over one to three days.
3.8★ galaxyhas ending
Intergalactic Juice BarComing soon
Also physics, space
Swing a knife on a rope with physics to slice fruit into ever smaller pieces, then upgrade factories and travel to new galaxies.
3.9★ galaxy
Gamblers Table - Prototype
Also idle, incremental
Flip coins for cash, move up to better coins and hire helpers who flip them for you. A prototype of a Steam game.
3.8★ galaxy
Stellar Lumen LEGACY
Also incremental, space
The reinstated legacy build of a 2023 incremental mod, kept around with occasional fixes.
3.8★ galaxy
Spirit Dungeons: Legacy
Also incremental, idle
A defeated necromancer rebuilds an undead army and turns righteous in this tiny js13k incremental.
3.7★ galaxy75% idle
Black Hole Shrinker
Also incremental, space
Shrink a black hole through Hawking radiation to collect quarks.
3.7★ galaxy
The Limitless Journey
Also space, incremental
Start with a single cursor and push your point count toward 1e200 as you travel across a vast universe.
3.6★ galaxyhas ending
Dark Forest VillageDormant
Also incremental, space
Grow and defend a village against hostile outside forces, with the long-term aim of leaving for the stars.
3.5★ galaxy
Cosmic CollectionDormant
Also incremental, space
Poke a black hole to pull collectible cards, chasing rare finds and unlocking fun facts along the way.
3.4★ galaxySolar ColonyUpdated
Also space, physics
Click to launch payloads from the Moon's mass driver, timing the orbit to reach Mars, Venus or Mercury and slowly colonize the inner solar system.

IUG: Revived
Also space, incremental
Grow a universe to enormous sizes across two prestige layers. A faster remake of Incremental Universe Growth.
3.0★ galaxy
Rain Collector
Also idle, incremental
Catch different currencies as they fall from the sky, buy upgrades and eventually unlock automatic collection.
2.6★ galaxy
Pegfinity
Also physics, incremental
Launch balls into a pachinko board where hits chain into combos, then buy permanent upgrades like explosive pegs, portals and lasers between runs.
76% steam
Will it Crush? Idle Game GearUpdated
Also idle, physics
Build and upgrade a toothed roller machine that crushes whatever you feed it.

TerraGenesis - Space SettlersUpdated
Also idle, space
Terraform real and fictional planets using NASA data, building habitats and choosing among four factions.

War Tortoise 2Dormant
Also idle, incremental
Pilot a heavily armed tortoise tank across a large world, gearing up with loot, pilots and heroes.

The Tower - Idle Tower DefenseUpdated
Also idle, incremental
Defend a single tower against waves, buy permanent upgrades and research while idle or active.
50% idle
ExoMiner - Idle Miner UniverseUpdated
Also idle, space
Start with one small mine and a ship, then expand to other planets, crafting materials and inventing tech while miners and rovers work in your absence.
75% idle
Idle Orbital MarbleDormant
Also idle, physics
Send marbles around unlockable routes with physics, merging three matching balls to upgrade them.