It's unlikely we'll be able to do a mobile version, for a few reasons;
The overall size of the amount of voice files in the game would likely be just too much for some mobile devices, clocking in at over 25 hours of voicework
Being a platformer game where you'd be holding up to 3 buttons at once often (direction + shoot + jump), it would prove a challenge to fit all that on screen at once and again with some mobile devices not recognizing multiple presses like that
Switching the control scheme to allow for say, single button specials or insta-charge things would fundamentally change what you could do on maps, leading to many softlocks and similar issues
The text would need to be upscaled to be readable on a mobile device, which means all 250,000+ words would need to be re-arranged and the voicework per block of text re-chopped up, which would take probably 4-5 months minimum to get everything in order
A lot of new GUI art would need to be made and new menus programmed in for things like the powerups screen, which would be too small as-is to work on a mobile device
At best, we'd probably try to release a version for large tablets, as that would make all of these a non-issue, but going forward, we'll be making games here and there that will be specifically designed with mobile in mind, along with specifically "desktop/laptop-catered games" like Future Fragments still.