TDG is a single-player military tower defense game. Hold a 30-wave campaign or an endless run on procedural maps, place and upgrade six tower types, meet Siege Carrier bosses, and adapt when new paths open. Sell or repair between fights. Early Access: full runs now, more content and polish ahead.

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Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“TDG already has a complete campaign: a 30-wave run or endless mode, six tower types, Siege Carrier bosses, branching paths, and a Top 10. Early Access is so we can ship that loop now and keep tuning balance, content, and polish with players instead of holding the game until a 1.0 feature list is finished.”

Approximately how long will this game be in Early Access?

“Several months of paid Early Access. We will leave Early Access when the 30-wave campaign feels complete and stable, with the planned content and balance updates below shipped. There is no calendar 1.0 date yet.”

How is the full version planned to differ from the Early Access version?

“Early Access is the full core loop. Planned additions before 1.0: more maps and enemy pressure, further tower and wave balance, extra audio and UI polish, and quality-of-life. Steam achievements, extra platforms, and a map editor are not promised for 1.0.”

What is the current state of the Early Access version?

“Playable end-to-end on Windows: a 30-wave campaign or endless mode, Normal and Hard procedural maps, paths that open mid-run, MG Nest, Oil Slick, Field Depot, Mortar, Missile Battery, and Railgun, upgrades, repair, sell, a scrap economy, win and lose, and a Top 10 synced with Steam Cloud. Siege Carriers arrive every ten waves. Single-player, mouse and keyboard. Offline play works; an account is only needed for Cloud sync.”

Will the game be priced differently during and after Early Access?

“We plan to offer Early Access at a lower price than the intended full-release price. When the game leaves Early Access, we plan to raise the price to reflect the finished content and polish. Exact amounts may vary by region and are shown on the store page; we are not locking in a specific currency amount here.”

How are you planning on involving the Community in your development process?

“We plan to use player feedback to guide balance, bug fixes, and content priorities during Early Access. We plan to post update notes with major patches, read bug reports and suggestions, and adjust the roadmap when community input clearly improves the game. We cannot implement every request, but we will be transparent about what we are working on and what is still experimental.”
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This game is not yet available on Steam

Planned Release Date: 2026

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About This Game

TDG is a focused military tower defense game from Rubbleline Games. Hold the line across a 30-wave campaign or push an endless run, spend scrap wisely, and keep your base standing when the map changes under fire.

Hold the line

Build on a procedural battlefield. Place emplacements, upgrade them through tiers, and sell or repair between waves. Enemy vehicles push harder as the run goes on, Siege Carriers arrive every ten waves, and new routes open so your early plan is never permanent.

What’s in the game now

30-wave campaign or endless mode, with clear win and lose states

Normal and Hard procedural maps

Six towers: MG Nest, Oil Slick, Field Depot, Mortar, Missile Battery, and Railgun

Upgrades, sell, and repair

Up to three extra paths that open mid-run

APC, Scout, Tank, and Siege Carrier enemies

Top 10 scores saved on this PC and synced with Steam Cloud

Offline play on Windows

Early Access

TDG already delivers complete runs. During Early Access we will keep improving balance, content, and polish based on player feedback. The store Early Access tab has the current roadmap.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Some game art was created with generative AI assistance (Grok / xAI). Design and direction by Rubbleline Games. No AI content is generated during gameplay, and the game does not call external AI services while playing.

System Requirements

    Minimum:
    • OS: Windows 10 64-bit
    • Processor: Dual-core 2.0 GHz
    • Memory: 4096 MB RAM
    • Graphics: DirectX 11 compatible (integrated GPU)
    • DirectX: Version 11
    • Storage: 400 MB available space
    • Sound Card: DirectX compatible
    • Additional Notes: Keyboard and mouse. Offline play.
    Recommended:
    • OS: Windows 10 64-bit
    • Processor: Dual-core 2.0 GHz
    • Memory: 4096 MB RAM
    • Graphics: DirectX 11 compatible (integrated GPU)
    • DirectX: Version 11
    • Storage: 400 MB available space
    • Sound Card: DirectX compatible
    • Additional Notes: Keyboard and mouse. Offline play.
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