In fairness, the developer wasn't exclusively sinking hundreds of hours of his free time into a single DS game -- he also spent quite a bit of time traveling to game studios around the world and doing R&D work for Valhalla's next (read: first) project, claimed to be "way outside the scope of our company" by Itagaki. According to him, that next game "will earn Valhalla Game Studios its place in history," and he intends it to sell at least four million copies. But for now, he's got a model train set to build with some of his friends.
"I'm planning to rent out some space and build a seriously big train layout, 7 or so meters (23 feet) in length. There are some professionals in that field among my friends, so I'm thinking about building something really decent together with them and having people come over and play with the results. It'd be a business, though I'd make it free for children -- kids are pretty rough with model trains, but I'll just have to deal with that." Kids these days.