MemriseTurbo.user.js

// ==UserScript==
// @name           Memrise Turbo
// @namespace      https://github.com/infofarmer
// @description    Makes Memrise faster
// @match          http://www.memrise.com/course/*/garden/*
// @match          http://www.memrise.com/garden/water/*
// @match          http://www.memrise.com/garden/review/*
// @version        0.1.8
// @updateURL      https://github.com/infofarmer/memrise-turbo/raw/master/MemriseTurbo.user.js
// @downloadURL    https://github.com/infofarmer/memrise-turbo/raw/master/MemriseTurbo.user.js
// @grant          none
// ==/UserScript==

var oldstart = MEMRISE.garden.feedback.start;
MEMRISE.garden.feedback.start = function (){
    if (MEMRISE.garden.box.state === 'choosing-mem') {
        oldstart(1);
    }else{
        MEMRISE.garden.box.next_press();
    }
};

$('body').on('input', function(e) {
    try {
        if ($(e.target).is('input')) {
            var g = MEMRISE.garden;
            var b = g.box;
            var s = g.scoring.score_response(
                b.$input.val(),b.thing,b.column_a,b.column_b);
            if (s === 1) {
                MEMRISE.garden.box.check();
            }
        }
    } catch (err) {
        console.log('error - falling back to default behavior', err);
    }
});

// always let audio play in full
MEMRISE.audioPlayer.stop = $.noop;
MEMRISE.audioPlayer.stopAfter = $.noop;

// disable pausing (especially automatic)
MEMRISE.garden.pause = $.noop;

// always disable timer
$("div.garden-timer div.txt").bind("DOMSubtreeModified", function() {
    MEMRISE.garden.timer.cancel();
});

// disable alert on exit
MEMRISE.garden.prevent_accidental_unloading = $.noop;