Alt click on a node connection automatically disconnect it from the other nodes. And there is some nodes which can be easily summoned by pressing a key and clicking at the same time. Like B+click will place a branch, and S+click a sequence.
If you're willing to compile it, Aseprite is a great option as well.
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Kotaku published a very interesting story on a new game Epitasis from Lucas Govatos. It’s a puzzle exploration game, which looks similar to Myst and The Witness. The interesting thing is that the whole project with its crazy landscapes was actually inspired by electronic music (including, but not limited to Tycho & Washed Out).
There will be a lot of secrets hidden in the world around you, plus the player will be able to solve various puzzles. It’s not the easiest game to play from the looks of it. Some really harsh challenges are ahead. Hopefully the vast foreign virtual world and the abundance of very nice visuals will keep you going. The game had a very troubles development history, but Lucas Govatos is positive that Unreal Engine 4 helped him to achieve the necessary result:
Lucas actually writes a lot about the development in his blog, which features a lot of cool info, including breakdown of some systems (like the work with the music) and the rendering of portals in UE4. It’s a fascinating read, if you’re into UE4 game development.
At the moment, the game is in a state where most basic and core systems are completed. The developer is just building a lot of additional content: levels, assets, designs. It’s a hard and time-consuming process. We do expect to see the demo released in 2017, but as for the final release – it’s still a mystery.