Blissful life in Solarimere archipelago is in danger. Barbaric Aquator tribe is invading peaceful Aerian lands! Join officers of Queen Albina in their struggle to repel Aquator invasion.
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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is 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?

“We chose Early Access for Seacurity Breach for two reasons:
  • The game has fully playable campaign but would benefit from further polish and player feedback.
  • The game has a level editor for creating and publishing levels to Steam Workshop. To better adapt the editor to player desires and to provide great editing experience overall we want to work with the community.

Approximately how long will this game be in Early Access?

“We are planning to stay in Early Access approximately three to six months depending on community feedback.”

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

“At the end of the Early Access, we plan to have a complete and polished game with more defense buildings, enemies, props (available in campaign and for level creators in the editor), Steam achievements, custom level leaderboards and the most user-requested features.”

What is the current state of the Early Access version?

“The current Early Access version has:
  • Full-featured campaign, that needs some polish and balancing.
  • Five types of defensive buildings with all their upgrades implemented.
  • Five types of enemies.
  • Partially complete sound effects.
  • Custom level editor and Steam Workshop integration.
  • Steam cloud saves.
  • Some of the art assets are placeholders and will be replaced later on. Overall visual quality of the game is not yet final and will improve during Early Access.

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

“We are planning to raise price of the game by approximately 30% when we reach the end of the Early Access.”

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

“We are looking to have a regular interaction and feedback from the community. This will include discussions in forums, posts in game's recent update section about the development process and communication on social media.”
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September 14

Unity NavMesh and Pathfinding

Here we go! Our first blog about Seacurity Breach and its development. And the game hasn't even hit early access yet. You might be interested, why now? Our goal with these blogs is to show you our development process. To showcase the inner workings of a small indie game studio (even if you can't find us on the map) and to build a connection with the people that enjoy our games.

And now let's dive into some sexy talk about Unity NavMesh system! Don't worry! If this isn't something you are interested in, there is always the next week.

What is Unity NavMesh? Simply put, it's a navigation system that allows your created characters to come alive and move around your beautiful maps. It creates pathways and shows your units all the obstacles in their way, so they can go around them, jump over them etc.

Now let’s use our newest project as an example. Wait, before that we should explain a thing or two. Seacurity Breach is a Tower Defense game with an increased focus on map verticality and PUNS. We can’t forget those glorious puns. Now back on topic. Like in every Tower Defense game your ultimate goal is to stop your enemy before it reaches its target. So, using the NavMesh system, during level loading, your enemies plan the shortest way to their target and off they go! March towards a potential booty.

Cool stuff, right?

And this is where it gets interesting. In the grand scheme, for a TD game, it's all you need. A path from point A to point B. But it felt too static and we weren't just gonna stop there. Our goal was for a player to make meaningful decisions, interact with enemies. Plus, we got all this map verticality untapped. The first step we decided on is to give enemy units the MIGHTY ABILITY OF JUMPING. The great thing about Unity engine’s NavMesh system is that it can automatically map multiple layers of your level as walkable objects.

As you can see, right now our enemies can walk on an elevated ground, but they can’t get there. And this is where jumping comes into play. But for the unit to jump somewhere you need two things. First, an Off-mesh link that shows the AI that it can move from his current location to another mesh if a gap between them exists. Secondly, a proper jumping animation,  we don't want to see a static seahorse flying. That's a scary sight.

o we link both layers together as pictured by the red nodes and our unit knows that it's ok to jump on and off it. With that jumping is done.

Now some units can jump (one block high)! Open the champagne! Ok, it's not that impressive, jumping was already a thing when Atari ruled the world. But that's how a game gets built. Small things stacked one onto another.

Our next idea was, what if a unit had an ability to wallcrawl and reach places that a player might not account for. Honestly, we don't know any other Tower Defense game that has done it. And that's how an assassin character was born. Like we stated previously, Unity is great at automatically making NavMesh on multiple layers. The issue arises when it comes to walls. Then it's a little bit different story.

In the early stages of development, we went with the optimistic, naive approach. NavMesh is built (generated) everywhere and units have a path from point A to point B. Everything should be fine and work as intended. And it did, it was beautiful! But everyone wants for their game to look pretty, have a particular art style, so do we. So you add decorations, buildings, plants etc. And that's when we hit a small snag with NavMesh generation. Who would have thought that making a game more pretty would create technical problems. The issue was that some of our decorations ended up creating 'holes' in the NavMesh, particularly on walls. Thus prohibiting assassin units from traversing those blocks. One way of dealing with that issue is to remove colliders on decorations. But we weren't fans of that. Units clipping trough world objects isn't a good look. Like always in life, the simplest solution almost always is the best one. If a block isn’t used for the assassins wall crawling ability or it has objects attached the engine will automatically skip NavMesh generation for those walls. Unless we have manually tagged particular walls/blocks, then it's just business as usual for the engine (which is great for performance).

This time focus on the green nodes. They are indicating to the engine that it needs to generate a NavMesh on the tagged surfaces and to also create an Off-mesh link (on first and last 2 nodes so the unit can step on the wall and step off it on the top.

As you can see the unit can reach places on a map that a player might not think at first. That adds an extra layer and planning aspect to the game when the player knows that he/she will have to deal with that particular unit.

Now let's see both of those units in action. Quick prototype 'island' to show off how it works.

And that's the 'short' version about our experience with Unity engines NavMesh system in our latest project. We had some issues, some things we had to learn. But for everything to work and look like you want it, well that takes a little bit more work and knowledge.

See you next time!
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P.S. For regular blog posts on other things besides game development visit We are planning on adding weekly blog posts about all kinda topics there.
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About This Game

Blissful life in Solarimere archipelago is in danger. Barbaric Aquator tribe is invading peaceful Aerian lands!
Join officers of Queen Albina in their struggle to repel Aquator invasion. Build and upgrade defensive structures, place barricades and traps, manage resources strategically and fling attackers across the sky!


Analyze attackers and choose fitting defenses to take with you into battle. Strategically place towers, traps and other buildings, and fight off waves of pesky Aquators. Manage your gold and level up defenses. Earn crystals and permanently upgrade your defenses between levels. Push through more challenging difficulty levels to test your skill! Play custom levels for more challenge or weird level design community has come up with.

  • Story - Follow Aerian and Aquator struggle in a campaign consisting of 25 challenging levels!
  • Open Level Design - Levels are designed to take full advantage of vertical space in 3D terrain! No more boring defenses on the flat surface only.
  • Defensive Structures - Build impenetrable defenses no stinking Aquator will breach. Unlock new defenses and upgrade them.
  • Varied Enemies - You'd be surprised what Aquators have in their sleeve. Considering most of them don't have sleeves at all.
  • Puns - Bird and fish puns to be more spefishic. A lot of them actually.
  • Level Editor - Extend your game with free community made levels or create your own fully featured levels and share them with the community on game's Steam Workshop!

System Requirements

    • OS: Windows 7 SP1
    • Processor: 2 GHz Dual Core
    • Memory: 2 GB RAM
    • Graphics: 512 MB VRAM
    • DirectX: Version 10
    • Storage: 2 GB available space
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