Top similar games like The Planetologist:

Kholin Echo is an space action rogue like. Find a way to stop the Oblivion wave, liftoff with your ship, explore procedurally generated planets, fight enemies and collect energy to improve your abilities and weapons, while discovering the secrets of an ancient civilization

Explore, mine, and fight your way through the galaxy in this 2D space mining adventure! Unearth the relics of ancient civilizations and face the horrors that linger beneath alien worlds.

Deploy your turrets and defend against an ever-growing mechanical horde! Upgrade your turrets separately in unique ways, use unique character abilities, and create powerful synergies.

Escape from a tyrant government and save the planet Shambala. Be the resistance! Starexcess is a retro-looking vertical shoot 'em up inspired by the 16-bit era. Take on enemy armies and dodge frenetic shots in this shoot 'em up for one or two players in a local ofline co-op.

Battle increasingly deadly hordes in an action-packed survivors-like with tower defense elements. Create unique builds, unlock and place towers, upgrade your character, and fight to defend the Kingdom of Stellara.

This is a rogue-like top-down shooter where you control a spaceship that is sent out to explore the caves on the Moon. Once you enter the caves, you find out that there are enemies. It is up to you to survive against them while also trying to find the path down to the next level of the caves.

Inspired in mega drive, shmups, math and physics. Control kdV an artificial intelligence spacesand destroy all humans.

Microbes and Machines is a roguelite action game where you control a little bubble robot that fights against the forces of evil.

BSG: Big Space Guns is a coop bullet hell roguelike where you step on giant buttons to activate cannons while you dodge bullets.

STEEB is a 2D top-down, non-linear exploration game. You are a bio-robot scout, sent out to explore and survive on unknown planets. Take samples from alien organisms to gain unique abilities. Gather scraps and strategically choose upgrades. Will your discoveries save humanity?

Slice, dice and blow up thousands of enemy ships! Spaceborne Survivors is a sci-fi casual game with rogue-lite elements, where your choices can allow you to become a mecha menace against huge enemy fleets invading your space system.

Annihilate endless hordes of aliens in this action-packed sci-fi rogue-lite. Acquire a variety of firearms and upgrade your equipment to fulfill your mission.

What do you do if you are the only one left aboard a spaceship? Your team has embarked on a mysterious expedition a few years ago, the ship’s machinery has started acting up and it seems there are ghosts wandering about. Luckily, the black hole above you doesn’t pose any problems…yet.

A sci-fi shoot'em'up game with heavy focus on upgrades experimentation, featuring two unlikely heroes that must work perfectly together, despite their share of secrets, to surpass their limits and succeed in eliminating a threat that might destroy both Earth and Andraxia if left unchecked.

To stave off the cold, crushing loneliness at the end of time, embrace eternity. Stellar Terminus is a combat-focused, hard sci-fi dungeon crawler set at the heat death of the universe. Scavenge for resources, robots, and knowledge in the procedurally generated ruins of long-gone civilizations.

lone.AI is a space RPG roguelite. With challenging, relentless gameplay, each run has the potential to boost your ship's power, speed, and more. As a lone AI, fight your way through the solar system and uncover the secret behind the ZOSMA, an alien race that holds power over the system.

Join Captain Rijk as he attempts to escape from the clutches of one of the most villainous species in the galaxy. Help to uncover the horrors that are being carried out on the fringes of the civilised galaxy and become the divine being prophesised to inspire an uprising and destroy The Domain.

Outpost Delta is a single player, 2-D side-scrolling sci-fi shooter for PC. Take on the role of Delta, the outpost’s emergency defense, who along with her AI companion must defend the space station against alien intruders.

Dynamic 2D retro, pixel-art, shooter. Fly fast, shoot accurately. Fight back the Rivanirs invasion. You are the Captain Jackson, you are their Doom.

Star Devil is a Sci-fi Station Survival Roguelike Game with dynamic alien infection. Playable in both single player and split-screen co-op.

The Citizen Kane of Super Crate Box clones - dance with death through randomised rooms to clear your space freighter of irradiated aliens in a brutal arcade platformer shooter stuffed to the brim with unlockable weapons, explosives, special abilities and defense moves.

Blast aliens to pieces and start a rebellion in this fast paced pixel art top down shooter where sprinting kills.

Voidwatch is a silky-smooth space shooter roguelike. Hop from planet to planet, facing off against the Cult of the Void as you fight to free the galaxy from their clutches. Collect new weapons and powerful modifications to improve your Voidhawk Infiltrator starship & lay waste to your foes!

Defeat enemies and get parts! Build your own spaceship!

FTL meets Vampire Survivors meets Superhot. Equipped with the one of a kind Time Engine, time only moves when your ship moves. Escape the doom impending swarm that is threatening the galaxy.

Dive into the Ocean Keeper – a cooperative roguelike where four survival miners defend their Mech Spider, fight with endless hordes of monsters, and dig for resources. Team up with your friends, upgrade between waves, and survive the deep caves, full of treasures… if you can.

Shoot aliens, fly around and make everything explode, alone and with friends, in this frenetic 2D run and gun roguelite. Survive the procedurally generated environment, collect weapons, level up and defeat planetary bosses. Improve between runs and discover new planets as you win.

You are a robot with the mindset of a child, but your advanced robotic body allows you to fight better than most humans. Your goal is to solve the mystery of how the aliens got aboard the spaceship and, more importantly, to find a new energy source to survive. A strange scientist will accompany you.

Space Bot is a strategic action roguelite where your environment is fully desctructable, and out to get you. Destroy planets with your giant mining drill, and fight off dangerous alien lifeforms

Shoot, smash and explode your enemies in this space shooter inspired by the golden age of arcade games.

Critical Point is a retro sci-fi casual strategy game. You have to make the particle count in reactor cells exceed 4, surpassing the critical point of fission to generate energy required for interstellar voyages.

Solitarius is a 2D top-down wave shooter set in a sci-fi space environment. It is a free minigame that contains six different levels, eight different enemies and nine different weapons. Instead of surviving as long as possible you have to make it through each level.

Pilot a lunar lander through 100 unique, alien-infested caves! Rescue astronauts, gather crates, and collect gems to unlock powerful upgrades. Navigate treacherous terrain, face hostile creatures, and deliver your precious cargo to the surface in this thrilling 2D adventure.

Xeno Crisis is an arena shooter in which up to two players take control of battle-hardened marines embarking on a deadly mission to confront an alien menace! Run and gun your way through thousands of adversaries, searching for survivors, and ultimately facing the origin of the outpost's demise.

Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.