Top similar games like Deep Space Observatory:

A nostalgia-infused pixel clicker in a comedy wrapper. 

A simple idle, clicker game where you create atoms and feed them to a black hole. Unlock new elements, upgrade your stats, resources, and watch the numbers go crazy

A short incremental game about feeding a Black Hole matter by destroying Asteroids, Planets, and Stars.

An idle/incremental game about a lone radio operator keying into a silent universe. Click or walk away, both work just as well. Build your station, log distant contacts, retune to grow stronger, and slowly decode what answers back.

Petal by Petal is a relaxing incremental gardening game where mindful movements are rewarded. Automate your garden, unlock powerful flower abilities, and watch your screen explode into vibrant colour as your garden grows.

'A Game About Making A Planet' is a short, satisfying incremental game. Make a planet by merging particles together. Playtime around 1-2 hours

A cozy incremental where you choose how your bees evolve, plant flowers, guide your hive, and grow a thriving honey empire.

Soba’s Gunpaw is a Short Incremental - Bullet Heaven game. Destroy everything, collect resources, then choose upgrades from a massive skill tree! Designed to be completed in around 4 hours.

Wildlife Planet is a Simulation & Idle game with the theme of wildlife and nature. You will unlock more and more species as you level up and learn the species knowledge. This is a game with refreshing scenes, immersive background music, and different kinds of wild animals and plants.

Incredicer is a short, incremental dice game where you roll dice, earn money, upgrade and buy helper hands to automate and increase your income.

Mango’s Fisharium is a short incremental game about catching unique fishes and displaying them in the Fish Aquarium. Designed to be completed in around 4 hours.

Inkremental is a short incremental game about splattering paint across canvases by bursting blobs of color. Revisit iconic artworks with a humorous twist, unlock upgrades, and take down quirky mini‑bosses as you bring each masterpiece to life.

A short incremental game where you try to download the entire universe. Just one more byte...

A short, chaotic incremental game about growing your black hole as you chase panicked animals across levels with janky physics. Catch them, stack incremental upgrades, and dive into fast runs that always tempt ‘just one more’.

An incremental game that grow a speck into a huge, mutant beast. Pop food in a petri dish, feed your pet, and choose mutations that visibly changes its body. Each play is an evolution into a different pet.

The epic story of evolution, technology, humanity, and dinosaurs is yours to tap.

A short relaxing incremental game disguised as a tower defense, but enemies can’t reach your walls. Thanks to lava.

Start with one discarded magnet and a single paperclip. Attract, snap, and stack metal objects into a growing clump, generate magnetic energy, unlock upgrades and automation, and expand from a tiny desk magnet toward an entire planet in this cozy incremental game.

'A game about eating the universe' is a short, satisfying incremental game. grow a black hole by destroying planets.

Help goblins take down a giant floating egg

A retro CRT-style idle mining game set in deep space. Expand your station, automate extraction fleets, harvest stars, and pay down an impossible debt.

ClickRush: Produce infinite clicks! Deploy drones and AI matrices to automate your empire. Take down Real-Time World Bosses with the community, level up your Battle Pass, and unlock celestial bonuses. Dominate the global leaderboard. Get your mouse ready!

Slice, earn, upgrade, repeat. Slice mutant fruits in an addicting incremental game! Annihilate armies of unique mutant crops, dive into a deep talent tree, unlock new levels, and research powerful fruit mutations to maximize your harvest and dominate the farm.

A cute and cozy incremental fishing adventure! Set sail as Luka the dog, reel in every fish in the sea, and grow a skill tree as deep as the ocean - one cast at a time on the road to becoming the best Fisherdog alive.

Sea and Sundry is a short incremental game about an otter and the sea. Catch clams, scallops, and urchins before they slip away, then crack them open for the tasty morsels. Adapt each night for quicker hands, a sharper eye, or a heavier rock. Forage farther each day, all the way to the abyss.

Monslice is a short incremental game about slicing monsters, collecting resources, expanding your skill tree, and unlocking and buying more monsters!

An active incremental were You Command your Skeleton Pirate crew. Destroy and Loot ships of their precious shells, Buy and Upgrade cannons. Unlock new abilities and Face Powerful Admirals and become the Richest Pirate there is.

A short incremental game about splitting atoms and triggering exponentially growing chain reactions.

A Cross-Play Clicker where you'll Tap, Hold, and Click your way to become the No.1 CEO in our unique multiplayer contests. As you manage upgrades, jobs, vehicles, staff, your island and its inhabitants, and your powerful research facility.

Space Colonizers is a simulation and strategy idle game of Sci-Fi adventure theme. To explore more planets and meet cute aliens, you have to constantly install parts and upgrade spacecraft.

This is a beautiful "Idle", "Incremental" game based on spirals and mathematics. Your goal is to make the spiral grow farther and farther from the origin. The game is very simple, but it is very deep and can be enjoyed for a long time!

A short incremental game about harvesting planets to feed your mothership. Mine, manage resources, grow your fleet, and unlock upgrades to evolve your species. You are the devourer of worlds.

A small incremental game about smashing piñatas, collecting toys, and climbing the corporate ladder as you unlock a vast upgrade tree.

Ballatory is a short incremental idler where you build and upgrade a chaotic swarm of bouncing balls to destroy cores and earn crazy amounts of money.

Build. Blast. Prestige. Repeat. An incremental game where you build the most productive exoplanet while protecting your enterprise from space pirates. Automate production, shoot rockets, employ an alien and keep on producing.

In Cthulhu pub, you can build your own pub or restaurant. Create cute characters, creepy monsters and establish a small cute pub or make a large castle with monsters, humans, and ancient Gods.