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[URGENT] Mantlet One needs a commander. Proxima-B is falling.

What began as a peaceful colonization and mining operation has escalated into a full-scale planetary conflict. A hostile response from the native inhabitants has turned Proxima-B into a war zone. Outposts are being wiped out.

Communication lines are severed. Resistance is fierce and unrelenting. You are the Fleet Commander of Mantlet One, the last major mobile command platform in orbit. Your orders are clear, establish control on the surface, deploy infantry and mechanized units to critical locations, Crush resistance and secure assets vital to New Terra’s expansion.

This is no longer a scientific expedition.

This is war. Start the campaign. Restore order.

For New Terra.

Space Mantlet
game_glandDeveloper
game_glandPublisher
2025-08-14Release
🎹🖱️ Keyboard + Mouse
🕹️ Partial Controller Support
🎮 Full Controller Support
No user reviews (0 reviews)
Public Linux Depots:
  • [0 B]
wall patch

replace wall collision algorithm, now using repelling field instead of per object testing. cap frame time tightly so unit cannot overshot due to velocity * game time.

[ 2026-01-05 05:02:59 CET ] [Original Post]
flow field fix

better flow field sampling, unit no longer confused on 90 degree turn or sharper turn.

[ 2026-01-02 05:35:57 CET ] [Original Post]
bug map too large

map size larger than allocated

[ 2025-12-31 13:50:59 CET ] [Original Post]
new terra cover stars with solar panels

new maps +3 \nnew map type, outer space platforms.

[ 2025-12-31 10:54:36 CET ] [Original Post]
map + 2

more skirmish maps. happy gaming

[ 2025-12-24 05:44:24 CET ] [Original Post]
maps +4

4 additional maps

[ 2025-12-23 15:46:27 CET ] [Original Post]
extra tileset

combining traditional tileset and terrain.

[ 2025-12-22 16:15:46 CET ] [Original Post]
craters

craters now reflect terrain type. \n

    \n
  • dirt craters\n
  • snow and ice craters\n
  • metal platform craters\n

[ 2025-12-19 14:29:02 CET ] [Original Post]
completing space platform

    \n
  • adding space mega structure.\n
  • adding platform hole decals\n

[ 2025-12-18 07:17:22 CET ] [Original Post]
new terrain

    \n
  • 1 new terrain\n
  • 1 new skirmish map\n

[ 2025-12-17 16:15:42 CET ] [Original Post]
minimap upgrade

minimap now has a toggle, one for displaying faction color, one for friends or foes.

[ 2025-12-10 11:50:14 CET ] [Original Post]
attack move

add attack move command.\npress TAB or use the icon to activate attack move. unit will shoot their way to the selected destination

[ 2025-12-09 10:52:30 CET ] [Original Post]
performance improvement

bro i was silly and doing mouse warping hahahaha. can\'t believe i wasted 17 milli seconds + just to warp mouse position. bro that is more than per frame budget OMG.

[ 2025-12-08 15:40:53 CET ] [Original Post]
AI improvement

improve AI, \n

    \n
  • improve avoidance algorithm\n
  • balancing unit strength\n
  • balancing navigation field and avoidance field.\n

[ 2025-12-07 10:53:52 CET ] [Original Post]
winter update

    \n
  • 3 new terrain, tundra, ice and snow, frozen rocks\n
  • new skirmish maps.\n

[ 2025-12-05 15:46:46 CET ] [Original Post]
gameplay update

    \n
  • better unit control, unit no longer attacking brutally\n
  • animating UI\n
  • add shortcut and hotkeys\n
  • fixed game crash after battle. \n

[ 2025-12-03 16:01:18 CET ] [Original Post]
bug fixed

game anomaly

[ 2025-12-02 07:58:05 CET ] [Original Post]
movement line

add movement line.

[ 2025-12-01 07:02:07 CET ] [Original Post]
ui improvement

    \n
  • add animated terminal\n
  • add accent to important button\n
  • add hot key. action now mapped to QWEASDZXC keys.\n
  • holding shift now grab and move map\n
  • add strategy tips at the end of game. \n

[ 2025-11-30 15:50:46 CET ] [Original Post]
Rise of the Velocrumn

Space Mantlet has just reached its biggest milestone yet. Get ready for absolute chaos, new enemies, new game mode, and massive visual upgrades.

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/45733609/872c6ec87712c5db80acccdbf862e1b86978c337.png\"][/img]

NEW PLAYABLE RACE VELOCRUMN

Introducing Velocrumn, the legendary giant lizards native to Proxima-B. Fire-breathing, spear-throwing, armored predators that multiply fast and hunt in massive hordes.

  • Insanely agile swarm units

    [/*]
  • Armored warriors and devastating elites

    [/*]
  • Play against them or play AS them

    [/*]
  • Destroy their eggs before hatching if you dare

    [/*]

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/45733609/7b8db9fd8a177146ebd3dd263a4499ef3d22cd94.png\"][/img]

NEW GAME MODE DEFENDER MODE

Hold the line. Protect your base for 20 waves of pure chaos against the apex predator swarm.

Build defenses

  • Adapt or be consumed

    [/*]
  • Every second counts

    [/*]
  • Can you survive the red world?

    [/*]

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/45733609/0f5ea58ef0b4cd0c1a07d4606304b76b1dcc78a7.png\"][/img]

ARMY PAINTER UPGRADE

Now featuring Velocrumn soldiers for full customization. Go tactical camo, ceremonial armor, or full Harajuku madness. your army, your style.

[img src=\"https://cdn.cloudflare.steamstatic.com/steamcommunity/public/images/clans/45733609/82ea0291e3dce9b82c636274a2f8368bc8f8cfea.png\"][/img]

PROXIMA-B VISUAL OVERHAUL

Maps now feature massive structural expansions, opening new tactical gameplay and visual scale. Proxima-B orbits a red dwarf star, and now the world reflects it:

  • New lighting & atmosphere

    [/*]
  • More dramatic tone

    [/*]
  • Strong sci-fi alien feel

    [/*]

MASSIVE PERFORMANCE BOOST

More units. More destruction. More chaos. Smoother gameplay, bigger battles.

UI Improvements

  • New custom cursor

    [/*]
  • Button click & hover sounds

    [/*]
  • Cleaner navigation UX

    [/*]

COMING NEXT

  • Level Editor

    [/*]
  • Heavy Mantlet Mech (Yapheon & Hamorx)

    [/*]
  • Velocrumn Titans

    [/*]
  • Defense structures: sentry guns, traps, medic & repair stations

    [/*]

[ 2025-11-28 09:50:20 CET ] [Original Post]
bug fixes and ui update

    \n
  • crash after play session fixed\n
  • ui sound added\n
  • performance improvement\n

[ 2025-11-28 08:17:52 CET ] [Original Post]

Minimum Setup

  • OS: OS: Ubuntu 22.04 LTS / SteamOS 3.0 (Deck)
  • Processor: Intel Core i5 / AMD Ryzen 3Memory: 8 GB RAM
  • Memory: 8 GB RAM
  • Graphics: Vulkan-compatible GPU (NVIDIA 1050 / AMD RX 560 / Intel Arc)
  • Storage: 2 GB available space
  • Memory: 16 GB RAM
  • Recommended Setup

    • OS: OS: Ubuntu 22.04 LTS / SteamOS 3.0 (Deck)
    • Processor: Intel Core i7 / AMD Ryzen 7Memory: 16 GB RAM
    • Graphics: NVIDIA 1660 Ti / AMD RX 580 or better
    • Storage: 2 GB available space
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