With the eShop having 30+ new games most weeks, it can be a pricey business if you're picking up titles regularly. We do get budget games to look at, too, and this week's eShop update (28th April) will bring Raven's Hike at $3.99USD (with regional variations, of course).
Its hook is 'no jumping, no walking', as you only use a grapple hook to work your way through 60+ levels. As a result each stage will ultimately be a big puzzle as you leap between walls dodging hazards.
It's the work of small Brazilian developer Wired Dream Studio, which released the rather cool-looking Red Ronin on Steam last year.
If you're looking for a bit of challenging puzzle-platforming at the cost of a takeaway coffee, Raven's Hike may be worth a look later this week.