Nintendo has found success in selling beloved old Super Mario games on the 3DS eShop, and now the company is poised for extra success as it's announced that several Game Boy Mario titles (and one Nintendo Entertainment System classic) will be on sale for limited periods as part of the promotional build-up to the release of New Super Mario Bros. 2.  Starting this Thursday in North America (other regions subject to different dates and pricing) you'll be able to buy the original Super Mario Bros. for just $3.99.  Other games will follow.  Here's the schedule:

• July 26 - Aug. 1: Super Mario Bros. - $3.99
• Aug. 2 - Aug. 8: Super Mario Land - $2.99
• Aug. 9 - Aug. 15: Super Mario Land 2: 6 Golden Coins - $2.99
• Aug. 16 - Aug. 22: Mario's Picross - $2.99

If nothing else, pick up Super Mario Land 2: Six Golden Coins.  It's the strongest of the four and the one that has aged the best of the sale group.  Mario's Picross is my secondary recommendation, as it's a charmingly fun little puzzle game that's perfect for short play sessions.  Really, though, you can't go wrong with any of these games.  They're all winners, and saving a little money when purchasing one just adds an extra incentive to buy.