Math Play

In the first variation, the player will have to solve regular math problems.

He first chooses the kind of operation (addition, subtraction, multiplication or division), next the skill level (1-3) and then is presented with the problems.

He must type in the answers, and the computer will register the time elapsed and the number of current problems solved.

If the player fails twice to solve a problem, the game is over.

The second variation displays algebraic problems.

The player selects the desired skill level (1-3) and has to enter the missing variable to each problem, and the rules are the same to the first variation.

The third variation is a addition or multiplication table game.

The player chooses addition or multiplication, then the number he wishes to practice.

Echo! is a basic Simon game (as invented by Ralph H.

Four colored numbers (red, blue, green, and yellow) will appear on the screen.

One of them will light up, and a tone will be played.

Then it is the player's turn: he has to match the lit up number.

Then, the first number will be light up followed by a second one.

The player has to match the sequence and it will keep increasing indefinitely.

If the player fails three times to match a sequence, the game is over.

Math Play for Nintendo DS is currently worth €7.41 loose. Prices are based on real sales and update regularly on Gamevaro.

Math Play has only a handful of tracked market sales, suggesting relative scarcity compared to more common Nintendo DS titles.

Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. These are tracked as separate market values because the price gap between them can be significant, especially for older releases.

The PAL version of Math Play is currently worth €7.41 loose, versus €6.16 for NTSC-U. Regional price differences usually come down to print run size and regional collector demand.